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18-Letter O Words by Ending Letter
All 149 18-Letter Words Starting With O
obligatorification(linguistics) The act or process of, or an instance of, (something) becoming or being made (more) obligatory, especially as part of the process of grammaticalization.occipitosphenoidal(anatomy) occipital and sphenoidaloccipitotransverse(anatomy) Having the occiput facing transversely (i.e. laterally).occulodentodigitalMisspelling of oculodentodigital.octachlorobiphenyl(organic chemistry) Either of twelve isomers of the polychlorinated biphenyl containing eight chlorine atomsoctacyanomolybdate(inorganic chemistry) The anion Mo(CN)₈⁴⁻; any salt containing this anionoctadecatetraenoicOf or pertaining to octadecatetraenoic acid or its derivatives; stearidonicoctaethyleneglycol(organic chemistry) The dihydroxy polyether formed from eight molecules of ethylene glycol.oculofacioskeletalRelating to the eyes, face, and skeleton.odontotremataceous(mycology, relational) Of or relating to the Odontotremataceae.oesophagobronchialAlternative form of esophagobronchial.oesophagostomiasis(pathology) A disease caused by infection by parasitic nematodes of the genus OesophagostomumoestroprogestativeAlternative form of estroprogestative.oligochaetologicalRelating to oligochaetology.oligodendrogenesisThe formation of oligodendrocytes.oligodendrogliomal(pathology) Relating to an oligodendrogliomaoligodendrogliomasplural of oligodendrogliomaoligodendrogliosis(pathology) Any disease that affects the oligodendroglionoligoendopeptidase(biochemistry) An endopeptidase that splits oligopeptidesoligofractionationdivision into oligofractionsoligogalacturonate(biochemistry) An oligomer of galacturonateoligogalacturonide(biochemistry) An oligosaccharide formed during the degradation of pectinoligohymenophoreanAny ciliate of the class Oligohymenophoreaoligohypomenorrhea(medicine) Decreased frequency of menstruation, as well as a reduced amount of blood loss with each menstrual episode.oligomeganephronia(pathology) A kidney disease characterised by larger nephrons that are reduced in numberoligooxopiperazine(organic chemistry) Any compound that has several oxopiperazine moietiesoligoparaphenylene(organic chemistry) An oligomer composed of para-phenylene moietiesoligosaccharidosis(pathology) Any of several diseases characterised by increased levels of oligosaccharides in the urineoligoteratospermia(medicine) Oligoteratozoospermia.oligoubiquitinatedubiquitinated by oligoubiquitinationomnidenominationalOf or relating to all denominations.omnidimensionalityThe property of being omnidimensional.omnidirectionalityThe property of being omnidirectional.oncohaematologicalAlternative form of oncohematological.oncoproteogenomicsThe genomics of oncoproteogenomes.onomatopoieticallyAlternative form of onomatopoetically.operationalisationAlternative spelling of operationalization.operationalizationThe act or process of operationalizing.ophthalmologicallyIn an ophthalmological mannerophthalmopathology(pathology) pathology of the eyesophthalmosonometrySonometry of the eyes.ophthalmotonometryMeasurement of the intraocular tension.opisthomonorchiineOf or relating to the monorchiids of genus Opisthomonorchisopsonophagocytosedinfected with opsonophagocytosisopsonophagocytosisphagocytosis initiated by an opsoninopsonophagocytoticRelating to opsonophagocytosis.optoelectronicallyBy means of optoelectronicsorganoheterotrophyThe condition of being an organoheterotrophorganolithotrophicRelating to organolithotrophsorganopathologicalorganic and pathologicalorganotherapeuticsThe practice of organotherapy.ornithocheiromorph(paleontology) a member of the clade Ornithocheiromorpha.ornithomimosaurianAny theropod dinosaur of the clade OrnithomimosauriaorthokeratologicalRelating to orthokeratology.orthonormalisationAlternative spelling of orthonormalization.orthonormalization(mathematics) A form of orthogonalization in which the resulting vectors are all unit vectorsorthopantomographyA form of radiography that produces panoramic images of the mouth.orthorectificationThe processing of an aerial photograph by orthorectifying it.orthoroentgenogram(medicine) A radiograph produced by orthoroentgenography.orthotypographicalOf or relating to orthotypography.oscillographicallyBy means of oscillography.osmoresponsivenessThe quality or degree of being osmoresponsive.osseocartilaginousAlternative form of osteocartilaginous.osseodensificationThe densification of bone as part of dental implant insertionostarioclupeomorphAny teleost of the cohort OstarioclupeomorphaosteoarchaeologistOne who studies osteoarchaeology.osteoarcheologicalAlternative form of osteoarchaeological.osteoblastogenesis(biology) The production of osteoblastsosteocalcificationOssification and calcification.osteocartilagenousAlternative form of osteocartilaginous.osteocartilaginousRelating to or composed of bone and cartilage, or of osteocartilage.osteochemonecrosis(medicine) Medication-induced osteonecrosis, typically affecting the jaw.osteochondromatousRelating to osteochondromataosteochondropathiaAlternative form of osteochondropathy.osteochondroplasty(surgery) Surgery to reshape bone and cartilage.osteoclastogenesis(biology) The development of osteoclastsosteoclastogeneticRelating to osteoclastogenesis.osteocompatibilityThe condition of being osteocompatibleosteoimmunologicalRelating to osteoimmunology.osteomorphologicalRelating to osteomorphologyosteoneuromuscularosteomuscular and neuromuscularosteoproliferationProliferation or growth of bone tissueosteoproliferativeRelating to, or causing osteoproliferationosteoradionecrosisA possible complication following radiotherapy, where an area of bone does not heal from irradiation.osteoradionecroticRelating to osteoradionecrosis.otomicroscopicallyIn an otomicroscopic mannerotoneuroprotectiveProtecting the inner ear.outwardlookingnessAlternative form of outward-lookingness.ovariohysterectomysurgical removal of the ovaries and uterusoveraccomplishmentExcessive accomplishment.overadministrationExcessive administration (of a drug)overaggressivenessExcessive aggression.overanticoagulatedExcessively anticoagulatedovercapitalisationAlternative form of overcapitalization.overcapitalizationThe state of being overcapitalized.overcategorizationThe act, process, or result of overcategorizing.overcentralisationAlternative form of overcentralization.overcentralizationExcessive centralization.overclassificationExcessive classification.overcompensatinglyIn a way that overcompensates.overconservativelyIn an overconservative manner.overfastidiousness(rare) The state of being overfastidious.overgeneralisationAlternative form of overgeneralization.overgeneralization(usually uncountable) The act of overgeneralizing.overidealisticallyIn an overidealistic manner.overidentificationA case of overidentifying with something.overinsulinizationExcessive insulinizationoverinterestednessThe quality of being excessively interested in something.overinterpretationExcessive interpretation.overlexicalizationThe creation and use of many words or lexical items for a single entity or concept.overloquaciousnessThe quality of being overloquacious.overmedicalisationAlternative form of overmedicalization.overmedicalizationExcessive medicalization.overmineralizationExcessive mineralization.overmultiplicationexcessive multiplication (of breeding organisms etc.)overneutralizationThe process of overneutralizing.overobsequiousnessExcessive obsequiousness.overoptimisticallyIn an overoptimistic manner.overpermissivenessExcessive permissiveness; the quality of being overpermissive.overpoliticizationexcessive politicizationoverpressurisationAlternative spelling of overpressurization.overpressurizationExcessive pressurization.overprivilegednessThe quality of being overprivileged.overproportionallyIn an overproportional manneroverprotectivenessThe state or condition of being overprotective.overquantificationExcessive quantification.overregularizationAct of overregularizing.overrepresentation(uncountable) The condition of being overrepresented.overresponsivenessThe quality of being overresponsive.overschematizationExcessive schematization.overscrupulousnessThe quality of being overscrupulous.oversensationalismexcessive sensationalismoversensationalize(transitive) To sensationalize too much.oversentimentalismoversentimentalityoversentimentalityExcessive sentimentality.oversentimentalize(transitive) To sentimentalize excessively.oversimplificationAn explanation that excludes important information for the sake of brevity, or of making the explanation or presentation easy to understand.oversimplisticallyIn an oversimplistic way.oversolicitousnessExcessive solicitousness.oversophisticationthe condition of being oversophisticated.overspecialisationBritish standard spelling of overspecialization.overspecializationExtreme or excessive specialization.overstratificationexcessive stratificationoversusceptibilityThe quality of being oversusceptible.oversystematicallyIn an oversystematic manner.overthoughtfulnessThe quality of being overthoughtful.ovolactovegetarianA lacto-ovo-vegetarian.oxazaphospholidine(organic chemistry) A saturated five-membered heterocycle having two carbon atoms, and one each of oxygen, nitrogen and phosphorusoxydehydrogenation(organic chemistry) dehydrogenation by reaction with oxygen
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