WORDS BY FIRST LETTER AND LENGTH

15 Letter Words Starting With O

Explore 588 English words that start with O and contain exactly 15 letters. Common examples include occidentalising, octocentenaries, odontoneuralgia, omniconsiderate, organohydrazine.

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15-Letter O Words by Ending Letter

All 588 15-Letter Words Starting With O

obedientialnessThe quality of being obediential.objectificationThe act or process of objectifying something intangible.objectivizationThe process or result of objectivizing.obliterationismA policy of obliteration.obscurification(colloquial, slang, used as a nonce only) The act of making something obscure, or (in computing) obfuscating source code etc.observationallyIn an observational way.obstructionallyAs, or by way of, an obstruction; obstructively.obstructionistsplural of obstructionistobstructivenessThe characteristic of being obstructive.occasionalisticOf or relating to the doctrine of occasionalism.occidentalisingpresent participle and gerund of occidentaliseoccipitocranial(anatomy) Relating to the occiput and the craniumoccipitofrontal(anatomy) Of or pertaining to the occipital and frontal bones of the skull.occipitolateral(anatomy) Having the occiput facing laterally.occipitomastoid(anatomy) Relating to, or connecting the occipital and mastoid bonesoccipitopontine(anatomy) occipital and pontineoccipitoventral(anatomy) occipital and ventralocclusogingival(dentistry) Relating to the occlusal and gingival sides of a toothocclusoproximalocclusal and proximaloccupationalist(philosophy) One who views objects in terms of the time and place they occupy.oceanographicalOf or pertaining to oceanography, the science of oceans.oceanologicallyIn terms of oceanology.ochlocraticallyIn an ochlocratic way.ochreasterosideA particular steroid glycoside.octacoordinated(chemistry) coordinated with eight ligandsoctadecadienateMisspelling of octadecadienoate.octadecadienoicOf or pertaining to octadecadienoic acid or its derivatives; linoleic.octadecadienoyl(organic chemistry, especially in combination) The univalent radical derived from octadecadienoic acid by loss of the hydroxy groupoctadecahydrate(chemistry, in combination) Eighteen water molecules in a hydrated compound.octadecanethiol(organic chemistry) The aliphatic thiol that has 18 carbon atomsoctadecapeptideA polypeptide containing eighteen amino acid moietiesoctadecatrienol(organic chemistry) An aliphatic alcohol that has eighteen carbon atoms and three double bondsoctanitrocubane(organic chemistry) A high explosive derived from cubane, and one of the most powerful chemical explosives known.octasaccharidic(biochemistry) Relating to an octasaccharideoctatriacontane(organic chemistry) The aliphatic saturated hydrocarbon having 38 carbon atoms, C₃₈H₇₈octocentenariesplural of octocentenaryoctogenarianismThe state or condition of being an octogenarian.oculopharyngeal(anatomy) Relating to both the eye and the throat (especially to their respective muscles)oculovestibular(anatomy) Relating to the eye and the vestibule.odontobothritis(obsolete, pathology) alveolitis of the jawodontodysplasia(dentistry, medicine) An abnormal development of the teeth, characterised by the deficient formation of enamel and dentin.odontologicallyIn terms of, or by means of, odontology.odontomaxillaryRelating to the teeth and jaw.odontoneuralgiaNeuralgia affecting the nerves in a tooth.odontopathologyThe study of diseases of the teeth.odontopterygianAn extinct pelican-like pelagornithid seabird of the suborder Odontopterygia.odoriferousnessThe quality of being odoriferous.oesophagographyAlternative form of esophagography.oesophagoplastyAlternative spelling of esophagoplasty.oesophagoscopesplural of oesophagoscopeoestratetraenolAlternative form of estratetraenol.oestrogenicallyAlternative form of estrogenically.offencelessnessAbsence of offence.offenselessnessAbsence of offense.officialisationAlternative spelling of officialization.officializationThe process or result of officializing.officinalisininA particular steroid glycoside.okurihikiotoshi(sumo) a kimarite in which the attacker circles behind his opponent and pulls him down while backing awayokuritsuridashi(sumo) a kimarite in which the attacker circles behind his opponent, lifts him up and carries him out of the ringoleographicallyBy means of, or in the style of, oleography.olfactotoxicantAn olfactory toxicantoligarchization(politics, uncountable) Conversion of a political system to an oligarchy; (countable) an instance of this.oligoamenorrhea(medicine) The condition of having irregular infrequent menstrual periods.oligoarthralgia(medicine) Arthralgia (joint pain) that affects several joints.oligoastrocyticHaving several astrocytesoligochaetologyThe scientific study of earthworms.oligodendrocyte(biology) Any of the cells of the oligodendroglia in the nervous systemoligodendrogialMisspelling of oligodendroglial.oligodendroglia(anatomy) tissue (neuroglia) consisting of glial cells that are smaller than astrocytes and form the myelin sheatholigofunctionalHaving a few functionsoligogalactosyl(organic chemistry, in combination) Several galactosyl groups in a moleculeoligoguluronateAn oligomer of guluronatesoligohydramnionAlternative form of oligohydramnios.oligohydramnios(pathology) A deficit of amniotic fluid in the amniotic sac, causing distinctive deformations of the foetusoligoisoprenoid(organic chemistry) Any isoprenoid that contains several isoprene unitsoligomannosidicDerived from an oligomannosideoligomenorrheicOf, pertaining to, or experiencing oligomenorrhea.oligomenorrhoea(medicine) Unusually infrequent menstruation.oligomenorrhoicAlternative form of oligomenorrheic.oligomerisationAlternative spelling of oligomerization.oligomerization(chemistry) The formation of an oligomer from a monomeroligometastasis(medicine, pathology) A state of limited metastasis, especially of cancer, with several (but not many) metastatic sites.oligometastaticRelating to oligometastasis.oligomethylenic(organic chemistry) Composed of several methylene groupsoligomicroarrayAn oligonucleotide microarrayoligonucleosideAn oligomer composed of nucleoside monomersoligonucleosome(genetics) A series of several nucleosomesoligonucleotideA short sequence of nucleotides (RNA or DNA), typically with twenty or fewer base pairs.oligoprogenitorOne of a small number of progenitorsoligoprotection(biology) The protection of oligodendrocytes from damageoligoprotective(biology) That protects oligodendrocytesoligopyrimidineA portion of DNA or RNA containing several consecutive pyrimidine basesoligorecurrenceA recurrence that happens several timesoligosaccharide(biochemistry) A polysaccharide of low molecular weight, being a polymer of between three and eight monosaccharide units.oligospermatismSynonym of oligospermia.oligospiroketalAn oligomer composed of spiroketal monomers.oligosyndactylyThe condition of having several fused / webbed digitsoligotrophicityThe condition of being oligotrophicoligouridylated(organic chemistry) Modified by the addition of several uridylate groupsoligoxyloglucan(biochemistry) An oligomeric form of xyloglucanoligozoospermiaThe condition where low numbers of spermatozoa are produced in an ejaculation.oligozoospermic(pathology) Of or pertaining to oligozoospermia.olioastrocytomaMisspelling of oligoastrocytoma.olivocerebellarOf or pertaining to the olivary nucleus and cerebellar hemisphere, especially with regard to the olivocerebellar tract connecting the two by means of fibres.omentoplication(surgery) plication of the omentumomnibenevolenceThe state or condition of being omnibenevolent.omniconsiderateShowing consideration to everybody.omnidestructive(rare) All-destroying.omnidimensionalRelating to, or existing in, all dimensions simultaneously.omnidirectional(physics, electrical engineering) Having a ring-shaped radiation pattern, with equal radiation in all azimuthal directions.omnifariousnessQuality of being omnifarious.omnimalevolenceThe state or condition of being omnimalevolent.omnipercipiencePerception of everything.omnipercipiencyomnipercipienceomnisovereignty(rare) Unlimited, unconditional sovereignty, often attributed to a supreme being.omnisufficiencyThe condition of being omnisufficient.omphalomesaraicSynonym of omphalomesenteric.omphalopsychite(theology, derogatory) A Hesychast.onchocerchiasisAlternative form of onchocerciasis.onchodermatitis(pathology) A form of dermatitis caused by filarial worms of the genus OnchocercaoncodermatologyThe study and the treatment of skin disorders that are the result of canceroncodiabetologyThe study of the relationship between cancer and diabetesoncogeneticallyBy means of oncogeneticsoncohaematologyAlternative form of oncohematology.oncohematologicAlternative form of oncohematological.oncosuppressionThe suppression of the formation and development of tumoursoncosuppressive(medicine) That suppresses the formation and development of tumoursoncotherapeuticRelating to oncotherapyoneirocriticismdream interpretationonomasiologicalOf or pertaining to onomasiology.onomatopoeticalonomatopoeicontogeneticallySynonym of ontogenically.ontotheologicalRelating to ontotheology.onychocryptosis(medicine) ingrown toenailonychodysplasiadysplasia of the nailsonychodystrophy(medicine) Dystrophic changes in nails, such as deformations, malformations or discolourations.onychogryphosis(dermatology) A hypertrophy or excess growth of the nails.onychogryphotic(medicine) Related to, or characterised by onychogryphosis.onychopathologyThe study of diseases of the nails.openheartednessAlternative form of open-heartedness.openmouthednessThe state of having the mouth open, especially in astonishment.operationalizedsimple past and past participle of operationalizeoperculoinsularopercular and insularophiderpetontid(zoology) Any tetrapod in the family Ophiderpetontidae.ophiolitologist(rare) One who studies ophiolites.ophthalmascopicMisspelling of ophthalmoscopic.ophthalmographyThe scientific description of the eye.ophthalmologistA medical doctor specializing in the eye: deficiencies of vision requiring correction, and diseases. Compare optometrist.ophthalmometricRelating to ophthalmometry.ophthalmopathic(ophthalmology) Relating to eye disease.ophthalmophobiaSynonym of scopophobia.ophthalmoplegia(medicine) A complete paralysis of the extraocular muscles which are responsible for eye movements.ophthalmoplegicRelating to, or exhibiting, ophthalmoplegia.ophthalmosaurid(zoology) Any ichthyosaur of the family Ophthalmosauridaeophthalmoscopesplural of ophthalmoscopeophthalmoscopicOf, pertaining to or using an ophthalmoscope.opinionatednessThe state or condition of being opinionated.opinionlessnessAbsence of opinions.opisthocomiformAny bird of the order Opisthocomiformesopisthoglyphous(of a snake) Whose teeth include an enlarged pair at the back of the maxillae which normally angle backwards and are grooved to channel venom into the puncture.opisthognathous(zoology) Having retreating jaws or teeth.opisthorchiasisA parasitic disease caused by trematodes in the genus Opisthorchis.opportunitylessDevoid of opportunity.oppositifolious(botany) Placed at the same node with a leaf, but separated from it by the whole diameter of the stem.oppositionalityThe quality of being oppositional.opprobriousnessThe state or condition of being opprobrious.opticopneumaticHaving both optic and pneumatic elementsoptionalizationThe process of making something optional.optoelectronics(physics) The branch of physics that deals with the interaction of light with electronic devices, or the production of light from such devicesoptogeneticallyIn an optogenetic manneroptokineticallyIn an optokinetic manneroptomechatronicOf or relating to optomechatronics.optophysiologicAlternative form of optophysiological.optospintronics(physics) The (study of the) interaction of light with spin polarization (spintronics)optostimulationoptical stimulationorbitomaxillary(anatomy) Of or pertaining to the orbit of the eye and the upper jawbone.orbitozygomaticAlternative form of zygomatico-orbital.orchestrationalOf or pertaining to orchestration.orchidectomizedsimple past and past participle of orchidectomizeorchitogenicity(rare, pathology) The condition of being orchitogenicorganoaluminium(organic chemistry) Describing any organic compound containing a carbon to aluminium bondorganoarsenicalSynonym of organoarsenic.organocatalysedAlternative form of organocatalyzed.organocatalysis(organic chemistry) The use of small organic compounds as catalystsorganocatalytic(chemistry) Of or pertaining to organocatalysis.organocatalyzed(organic chemistry) catalyzed by an organocatalystorganochalcogen(organic chemistry) The class of such compounds.organofleroviumDescribing any organic derivative of flerovium, especially one that has a carbon-flerovium bondorganogermanium(organic chemistry) Describing any organic compound containing a carbon to germanium bondorganographicalAlternative form of organographic.organohydrazineAny compound containing the hydrazide functional group attached to an organic moiety.organolanthanum(organic chemistry) Describing any organic compound containing a carbon to lanthanum bond.organomagnesium(organic chemistry) Describing any organic compound containing a carbon to magnesium bondorganomanganese(organic chemistry) Describing any organic compound containing a carbon to manganese bond.organomercurialDescribing any organic compound of mercuryorganometallicsplural of organometallicorganoneodymium(organic chemistry) Describing any organic compound containing a carbon to neodymium bond.organopalladium(organic chemistry) Describing any organic compound containing a carbon to palladium bondorganophilicityThe condition of being organophilic.organophosphate(chemistry) Any ester of phosphoric acid or its derivatives, especially one used as an insecticide or herbicide.organophosphine(organic chemistry) Any organic phosphineorganoplutonium(organic chemistry) Describing any organic compound containing a carbon to plutonium bond.organopotassium(organic chemistry) Describing any organic compound containing a carbon to potassium bond.organoruthenium(organic chemistry) Describing any organic compound containing a carbon to ruthenium bondorganostrontium(organic chemistry) Describing any organic compound containing a carbon-to-strontium bond.organosulfonate(organic chemistry) Any organic anion of general formula R-SO₃⁻organosulfurane(organic chemistry) Any sulfurane having at least one organic group attached to the sulfur atom.organotellurane(organic chemistry) Any tellurium analog of an organosulfide R-TeH or R-Te-R'organotellurium(organic chemistry) Describing any organic compound containing a carbon to tellurium bond.organotypicallyIn an organotypic mannerorganoytterbium(organic chemistry) Describing any organic compound containing a carbon to ytterbium bond.organozirconium(organic chemistry) Describing any organic compound containing a carbon to zirconium bond.orientalizationAlternative letter-case form of Orientalization.orientationallyWith regard to orientationoriginativenessThe quality of being originative.ornamentationalRelating to ornamentationornithichnology(paleontology, obsolete) The branch of science that deals with ornithichnites (fossilised bird footprints).ornithocheiroidAny pterosaur of the clade OrnithocheiroideaornithomimosaurAny of several theropod dinosaurs, of the clade Ornithomimosauria, that bore a superficial resemblance to modern ostrichesornithorhynchid(zoology) A duck-billed platypus, or any of its extinct relatives in the family Ornithorhynchidae.ornithorhynchusA platypus (genus Ornithorhynchus).ornithoscelidan(zoology, now historical) Any of the Dinosauria, formerly known as Ornithoscelida.orodigitofacialAlternative form of orofaciodigital.orofaciodigital(pathology) Affecting the mouth, face, and digits.oropharyngeallyIn an oropharyngeal mannerorphanotrophism(dated, rare) The care and support of orphans.orphanotrophium(historical) A kind of orphanage in ancient times.orthoavulavirusAny avulavirus of the genus Orthoavulavirusorthobrannerite(mineralogy) An orthorhombic-disphenoidal mineral containing hydrogen, oxygen, titanium, and uranium.orthobunyaviralRelating to orthobunyavirusesorthobunyavirusAny of the genus Orthobunyavirus of bunyavirusesorthocharmonium(particle physics) The form of charmonium in which the spins of the two quarks are parallel.orthochromatismQuality of being orthochromatic.orthochromatize(photography) To make orthochromaticorthochrysotile(mineralogy) An orthorhombic polytype of chrysotile.orthocomplement(mathematics, especially lattice theory) An element of an ortholattice which is the result of applying an orthocomplementation function to a given element (of that ortholattice) (of which it is said to be the orthocomplement).orthodiagraphicRelating to orthodiagraphy.orthodiphenolicRelating to an orthodiphenolorthodonticallyBy orthodontic means.orthodoxizationThe process of making orthodox.orthodromicallyIn an orthodromic mannerorthogeneticist(historical) One who supports the idea of orthogenesis.orthogeriatricsorthopaedics for geriatric patientsorthohantavirusAny member of the genus Orthohantavirus of single-stranded, enveloped, negative-sense RNA viruses.orthologization(genetics) The process of rendering something orthologous.orthometricallyIn an orthometric manner.orthomodularityThe condition of being orthomodularorthomorphodont(of teeth) Having the normal form of dentitionorthonairovirusAny virus of the genus OrthonairovirusorthonormalisedAlternative spelling of orthonormalized.orthonormalizedSubject to, or produced by orthonormalizationorthopaedicallyAlternative form of orthopedically.orthophosphatesplural of orthophosphateorthophosphoric(chemistry) Describing the ordinary form of phosphoric acid and its derivativesorthophotographSynonym of orthophoto.orthopraxicallyIn an orthopraxical fashion.orthoprosthesisAn orthodontic prosthesisorthopsychiatry(psychiatry) branch of psychiatry concerned with the prevention of mental illness, especially in the youngorthopsychology(rare) An approach to psychology focusing on positive human traits such as love, creativity, and personal autonomy.orthopterologicRelating to orthopterology.orthoptopicallyMisspelling of orthotopically.orthopyroxenite(geology) An ultramafic and ultrabasic rock normally composed of the mineral orthopyroxeneorthoquarkonium(particle physics) A form of quarkonium where the spins of the constituent quarks are parallel.orthoquartziticOf or relating to orthoquartzite.orthoretroviralRelating to orthoretrovirusesorthoretrovirusAny retrovirus of the subfamily Orthoretrovirinae.orthorhombicityThe condition of being orthorhombicorthoserpierite(mineralogy) An orthorhombic-pyramidal pale blue green mineral containing calcium, copper, hydrogen, oxygen, sulfur, and zinc.orthostericallyIn an orthosteric mannerorthosymplectic(mathematics) orthogonal and symplecticorthotacticallyIn terms of orthotactics.orthotospovirusAny virus of the genus OrthotospovirusorthotropicallyIn an orthotropic manner.orthotypography(typography) The study of correct typography according to established usage.orthowalpurgite(mineralogy) An orthorhombic-dipyramidal pale yellow mineral containing arsenic, bismuth, hydrogen, oxygen, and uranium.oryctognostical(obsolete) Relating to oryctognosy.oryctographicalAlternative form of oryctographic.oscillationallyIn terms of oscillation.oscillationlessWithout oscillation.oscillationlikeResembling oscillation; moving back and forth, or appearing to do so.osmohomeostasishomeostasis of osmotic pressureosmohomeostaticRelating to osmohomeostasisosmoregulationsplural of osmoregulationosmorespiratoryRelating to osmoregulation and respiration in fishosmosensitivity(nematology, neurology) An organism's degree of sensitivity to osmotic gradientsosmotherapeuticRelating to osmotherapy.osmotransducingThat initiates osmotransductionosmotrophicallyIn an osmotrophic mannerosmotropotacticRelating to osmotropotaxisosphresiolagnia(psychology, psychoanalysis) Sexual arousal through olfactory stimulation.osphresiologistOne who studies osphresiology.osseoperceptionmechanoreception of bone and connected tissueosteoarcheologyAlternative form of osteoarchaeology.osteoarthralgia(pathology) pain in the bones and jointsosteobiographicRelating to osteobiographyosteocatabolismThe catabolism of bone tissueosteochondriticRelating to osteochondritisosteochondritis(pathology) inflammation of a bone and its cartilageosteochondromalRelating to osteochondroma.osteochondrosis(pathology) A family of orthopedic diseases of the joint that occur in children and in rapidly growing animals, characterized by interruption of the blood supply of a bone, necrosis, and regrowth.osteochondroticOf or pertaining to osteochondrosis.osteocompatible(of an implant) compatible with bone tissueosteoconduction(medicine) Physical, three-dimensional scaffold or matrix to facilitate bone repair.osteoconductiveRelating to osteoconduction.osteodepositionThe deposition of bone tissue (in an inappropriate place)osteodysplasticRelating to osteodysplasiaosteodystrophiaAlternative form of osteodystrophy.osteodystrophicRelating to osteodystrophy.osteoglossiformAny fish of the order OsteoglossiformesosteohistologicAlternative form of osteohistological.osteoimmunologyThe study of the relationships between the skeletal and the immune systemsosteoinhibitionThe inhibition of bone tumoursosteoinhibitoryRelating to osteoinhibitionosteokinematicsThe relative movement of two bones that articulate at a common jointosteometricallyIn an osteometric mannerosteomorphologyThe morphology of bonesosteomyoplasticRelating to osteomyoplasty.osteopathicallyBy means of osteopathy.osteopathologicSynonym of osteopathological.osteoperiosteal(anatomy) Relating to both bone and its periosteumosteopoikilosisA benign sclerosing dysplasia of bone characterized by the presence of numerous enostoses in the skeleton.osteoproductionformation of boneosteoproductiveProducing bone.osteoprogenitor(biology) A stem cell that is the precursor of an osteoblastosteoprotectantSynonym of osteoprotective.osteoprotectionThe protection of bone from physical damageosteoprotective(physiology) That protects bone from physical damageosteoprotegerin(biochemistry) A cytokine that can inhibit the production of osteoclasts.osteoprotogerinMisspelling of osteoprotegerin.osteoregulatoryThat regulates the formation and development of bone tissueosteoresorptiveRelating to the resorption of bone tissueosteosarcopenia(pathology) gradual age-related loss of bone tissue and associated muscleosteosarcopenicRelating to osteosarcopeniaosteosonographyUltrasonography of a bone.osteosynthesize(surgery) To carry out osteosynthesisosteotendineousMisspelling of osteotendinous.osteotesticularRelating to bones and the testes; applied to a tyrosine phosphatase enzyme that is expressed in both.ostracodologistA scientist who studies ostracods.ostraconophobiaThe fear of crustaceans or shellfish.ostreaculturistAlternative form of ostreiculturist.ostreiculturistA breeder or farmer of oystersostrobogulosity(rare, humorous) The quality of being ostrobogulous.oswaldofilarineRelating to nematodes of the genus Oswaldofilariaotoacoustically(rare) In an otoacoustic manner.otolaryngologicPertaining to otolaryngology.otoneurologicalAlternative form of otoneurologic.otopathologicalRelating to otopathologyotorhinologicalRelating to otorhinologyoutdoorsmanshipSkill in, or fondness for, outdoor pursuits or sports.outintellectual(transitive, rare) to surpass (someone) in being intellectualoutsiderishnessQuality of being outsiderish.outsophisticate(transitive) To be more sophisticated than.outstandingnessThe quality or condition of being outstanding.overaccessorize(intransitive) To adorn oneself with too many accessories.overaccommodate(transitive) To be too accommodating towards.overaccumulatedsimple past and past participle of overaccumulateoverachievementA greater than anticipated achievement.overadrenalizedAdrenalized to excess.overadventurousExcessively adventurous.overaggravationExcessive aggravation.overaggregationExcessive aggregationoverambitiouslyWith too much ambition.overanesthetize(transitive) To give too much anesthetic to.overanxiousnessQuality of being overanxious.overapplicationThe act of overapplying.overappreciatedExcessively appreciated.overapproximate(transitive) To form an overapproximation of.overarchingnessThe condition of being overarching.overarrangementExcessive or overly precise arrangement.overassertivelyIn an overassertive manner.overattentivelyToo attentively.overattributionExcessive attribution.overbashfulnessExcessive bashfulness.overbearingnessQuality of being overbearing.overbrilliantlyToo brilliantly.overburdeninglySo as to overburden.overcaffeinatedHaving ingested too much caffeine, especially in the form of coffee.overcalculationCalculation producing too large a result.overcalibrationExcessive calibrationovercapitalisedAlternative form of overcapitalized.overcapitalizedsimple past and past participle of overcapitalizeovercarefulnessExcessive carefulness.overcentralisedsimple past and past participle of overcentraliseovercentralizedOverly centralized or concentrated in authority.overchlorinatedContaining an excess of chlorine.overchoreograph(rare) To choreograph with too much or too elaborate dancing.overcirculationExcessive circulationovercircumspectExcessively circumspect.overcleanlinessExcessive cleanliness.overcommitmentsplural of overcommitmentovercommunicateTo communicate too much.overcompensatesthird-person singular simple present indicative of overcompensateovercompensatorOne who overcompensates.overcompetitiveExcessively competitive.overcomplacencyExcessive complacency.overcomplicatedexcessively complicatedovercomplicatorOne who overcomplicates.overcompressionExcessive compression.overconcentrateTo concentrate excessively.overconditionedExcessively conditionedoverconfidentlyIn an overconfident manneroverconsiderateExcessively considerate.overconsolidateTo consolidate too much.overconstructedToo elaborately constructed.overconsumptionExcessive consumption.overcontentmentExcessive contentment.overcontractionExcessive contraction.overconvergenceQuality of being overconvergent.overcorrectionsplural of overcorrectionovercredulouslyIn an overcredulous manner.overcrowdednessThe property of being overcrowded.overcultivationexcessive cultivationovercuriousnessExcessive curiousness.overdegradationExcessive degradationoverdescriptionExcessive description.overdescriptiveExcessively descriptive.overdestructiveToo destructive.overdevelopmentExcessive development; the state or quality of being overdevelopedoverdimensionedHaving excessive physical dimensions; too large.overdisciplineddisciplined too muchoverdomesticate(transitive) To domesticate excessively.overduplicationExcessive duplicationoverearnestnessThe quality of being overearnest.overelaboratelyIn an overelaborate manner.overelaborationexcessive elaboration; going into too much detailoverembellishedsimple past and past participle of overembellishoveremotionallyIn an overemotional manner.overemphasisingpresent participle and gerund of overemphasiseoveremphasizingpresent participle and gerund of overemphasizeoverencapsulateTo encapsulate excessivelyoverenchantmentExcessive delight or enthusiasm.overencumbranceAn excessive encumbrance.overenforcementExcessive enforcement (of a law, statute, etc.).overentertainedEntertained too much.overentitlementThe condition of being overentitled.overenunciationExcessively strong enunciation.overestimationsplural of overestimationoverexfoliationexcessive exfoliationoverexpectantlyWith excessively high expectations.overexpectationAn excessively high expectation.overexpenditureAn excessive expenditureoverexplanatoryExcessively explanatory.overexquisitelyIn an overexquisite manner.overextrapolateTo extrapolate excessively.overextravagantToo extravagant.overexuberantlyIn an overexuberant manner.overfamiliarityThe state of being overfamiliar.overfearfulnessExcessive fearfulness.overflowingnessQuality of being overflowing; exuberance.overforwardnessThe quality of being overforward.overgeneralizedsimple past and past participle of overgeneralizeovergeneralizerOne who overgeneralizes.overgeneralizesthird-person singular simple present indicative of overgeneralizeovergranulationhypergranulationoverguesstimate(slang) To overestimate.overimaginativeExcessively imaginative.overimportationExcessive importation.overimprovementExcessive improvementoverincarcerate(transitive) To incarcerate too many of (a certain group).overinclusivelyIn an overinclusive manner.overinclusivityOverinclusiveness.overindulgentlyIn an excessively indulgent manner.overindustriousAlternative form of over-industrious.overinfluentialToo influential.overinformativeExcessively informative.overinquisitiveExcessively inquisitive.overinsistentlyToo insistently.overinstructionExcessive instruction.overinternalize(rare, ambitransitive) To tend to take responsibility for things one isn't responsible for.overinventoriedHaving too much of something in stock.overinvolvementExcessive involvement.overlearnednessExcessive learning; the quality or state of being overlearned.overlegislationexcessive legislationoverloadabilityThe quality of being overloadable.overlubricationexcessive lubricationovermasteringlyIn an overmastering manner.overmeasurementThe process or result of overmeasuring; a measurement that is larger than it should be.overmethylation(biochemistry) Excessive methylationovermineralizedExcessively mineralized.overnervousnessExcessive nervousness.overnourishmentExcessive nourishment.overnutritionalRelating to overnutritionoveropinionatedExcessively opinionated.overorchestrate(transitive) To plan too elaborately.overoxygenation(of living tissues or of ecological environments) The state of being overoxygenated; especially, in health care, too much oxygen therapy, typically in patients with pulmonary disease.overparametrizeTo parametrize excessivelyoverpenetrationExcessive penetration.overperformancethe act of overperformingoverpersonaliseAlternative form of overpersonalize.overpersonalize(transitive) To attribute too much of the cause of something to personal decisions and willpower, and not enough to other factors.overpessimisticMore pessimistic than is warranted.overpopularizedPopularized to too great an extent.overpopulationsplural of overpopulationoverpowerednessThe quality of being overpowered (subdued by superior force).overprecisenessThe quality of being overprecise.overpreoccupiedExcessively preoccupied.overpreparationExcessive preparation.overpressurisedsimple past and past participle of overpressuriseoverpressurizedsimple past and past participle of overpressurizeoverpresumptionExcessive presumption.overproductionsplural of overproductionoverproliferateTo proliferate excessively.overprominentlyExcessively prominently.overproportionsthird-person singular simple present indicative of overproportionoverprosecutionThe excessive prosecution of some kind of crime.overprotractionExcessive protraction.overprovocationExcessive provocation.overpublicationexcessive publicationoverpunctiliousExcessively punctilious.overpunctuationExcessive punctuation.overrationalize(transitive) To rationalize excessively.overrecompensedExcessively recompensed.overrecruitmentThe recruitment of too many people.overreplacementThe state wherein a substance, having previously been reduced or removed, has or is being replaced by re-adding it, but overly so, resulting in more of the substance than normal.overreplicationExcessive replicationoverrepresentedsimple past and past participle of overrepresentoverrestorationThe process of overrestoring.overrestrictionExcessive restriction.overrestrictiveExcessively restrictive.overresuscitate(medicine, transitive) To administer an excessive amount of fluid during an attempt to resuscitate (somebody).overrighteouslyToo righteously.overromanticize(transitive) To romanticize too much.oversensationalexcessively sensationaloversensitivelyIn an oversensitive manner.oversensitivityThe state or quality of being excessively sensitive.oversententiousExcessively sententious.oversentimentalExcessively sentimental.overseriousnessQuality of being excessively serious.overshadowinglySo as to overshadow.oversialylation(biochemistry) Excessive sialylationoversimplifyingpresent participle and gerund of oversimplifyoverspecializedsimple past and past participle of overspecializeoverspecializesthird-person singular simple present indicative of overspecializeoverspecificityThe state or quality of being overspecific.overspeculation(finance) Excessive or very risky speculation.overspeculativeExcessively speculative.overstimulatingpresent participle and gerund of overstimulateoverstimulationExcessive stimulation.overstimulativeExcessively stimulative.overstrenuouslyToo strenuously.oversuperlative(rare) Overly superlative; of excessive superlativeness.oversuppression(biochemistry) Excessive suppression (of a gene, hormone etc.)oversusceptibleExcessively susceptible.oversympatheticExcessively sympathetic.oversystematiseAlternative spelling of oversystematize.oversystematizeTo systematize to excess.overtemperatureA temperature that is significantly higher than that encountered in normal operationoverthriftinessExcessive thriftiness.overtranscribed(genetics) Excessively transcribedovertranslation(translation studies) The act of overtranslating.overtransmitted(genetics) transmitted excessivelyoverutilisationAlternative form of overutilization.overutilizationExcessive utilization; overuse.overvaccinationexcessive vaccinationoverventilation(medicine) hyperventilationoverventuresomeExcessively venturesome.overweeningnessThe quality of being overweening.overwhelmednessThe quality of being overwhelmed.overwithholdingpresent participle and gerund of overwithholdoverwroughtnessThe property of being overwrought.overzealousnessThe quality of being too zealousoviraptosaurianAny maniraptoran dinosaur of the clade Oviraptorosauria.ovoflavoprotein(biochemistry) A flavoprotein present in egg whiteovoglycoprotein(biochemistry) A glycoprotein found in hen's egg whiteovoviviparouslyIn an ovoviviparous manner.oxacycloheptene(organic chemistry) A heterocycle composed of a cycloheptene ring in which one of the methylene (-CH₂-) groups has been replaced by an ether (-O-) groupoxacyclopentane(organic chemistry) A relatively unreactive water-miscible compound with desirable properties as an organic solvent.oxacyclopropane(organic chemistry) Synonym of epoxide.oxaldihydrazone(organic chemistry) The dihydrazone of oxalic acidoxathiapiprolinA fungicide containing oxazole, pyrazole and thiazole groupsoxathiazolidine(organic chemistry) A five-membered, saturated heterocycle having two carbon atoms, and one each of nitrogen, sulfur and oxygen; any derivative of this compoundoxazaborolidine(organic chemistry) Any of a class of five-membered, saturated heterocycles containing two carbon atoms, a nitrogen, boron and oxygen atomoxidoreductasesplural of oxidoreductaseoxidoresistance(biochemistry) resistance to redox reactionsoxodicarboxylic(organic chemistry) Relating to a dicarboxylic acid in which a methylene group has been replaced by a carbonyl groupoxoerythromycin(organic chemistry) A ketone derived from erythromycinoxoindolizidine(organic chemistry) Any derivative of indolizidine in which a methylene group has been replaced by a carbonyl groupoxoisoaporphine(organic chemistry) Any oxo derivative of an isoaporphineoxoluminescenceluminescence when in the presence of oxygenoxothiazolidine(organic chemistry) Alternative form of oxathiazolidine.oxychalcogenide(chemistry) Any of a class of semiconductors made from mixed oxides/chalcogenides.oxychlorination(organic chemistry) Simultaneous oxygenation and chlorinationoxyfluorination(organic chemistry) Simultaneous oxygenation and fluorinationoxyhalogenation(organic chemistry) Simultaneous oxygenation and halogenationoxyphenbutazone(pharmacology) A metabolite of phenylbutazone.oxyphototrophic(biology) Performing oxygenic photosynthesis (photosynthesis, where oxygen is produced as a byproduct).oxysophocarpine(organic chemistry) An alkaloid found in the plant Sophora flavescens.oxytetracycline(pharmacology) A yellow crystalline broad-spectrum tetracycline antibiotic C₂₂H₂₄N₂O₉ that is produced by a soil actinomycete (Streptomyces rimosus) and works by interfering with bacteria's ability to produce essential proteins.

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