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All 135 Matching Words

oarswomanA female oarsman.obduction(largely obsolete) An autopsy.obestatin(biochemistry) An oligopeptide sequence, present in ghrelin, that binds to a specific orphan receptorobjectionThe act of objecting.obreption(Scots law, obsolete) Act of obtaining gifts of escheat by fraud or surprise.obruption(geology, taphonomy) Quick burial.obsessionThe quality of being obsessed.obtensionobtaining; obtainmentobtention(rare, sciences, law) The act of obtaining.obtrusionAn interference or intrusion.obvention(obsolete) The act of happening incidentally; that which happens casually; an incidental advantage; an occasional offering.obversionThe act of turning toward or downward.obviationThe act of obviating; deterrence or prevention.occlusionThe process of occluding, or something that occludes.occursion(obsolete, literal or figurative) A meeting or striking together; a clash or collision.ocinaplon(pharmacology) A particular kind of anxiolytic pyrazolopyrimidine drug.octaedronAlternative spelling of octahedron.octamoxinA hydrazine drug formerly used as an antidepressant.octathlon(athletics) A sporting event consisting of eight different sports or contests.octillion(US, modern British and Australia, short scale) A thousand trillion trillion, a billion billion billion: 1 followed by 27 zeros, 10²⁷.octopodanRelating to cephalopod molluscs of the order Octopoda.octothorn(rare) Alternative form of octothorpe, the symbol #.ocypodian(zoology, archaic) A member of the crab family Ocypodidae.oestrogen(Commonwealth) Alternative spelling of estrogen.offcumden(Yorkshire) Someone not from the area; an incomer, an outsider.offension(obsolete) Assault; attack, offensive; offense.offscreenExisting or happening outside the frame of the cinema or television screenoffseasonAlternative form of off-season.ofloxacin(pharmacology) A fluoroquinolone antibiotic C₁₈H₂₀FN₃O₄ composed of equal quantities of levofloxacin and dextrofloxacin, that is a broad-spectrum antibacterial agent that is used in topical solution for otic or ophthalmic use or is administered orally or intravenously for other uses.oganessonThe chemical element (symbol Og) with atomic number 118. It is the heaviest known element. Highly radioactive, it does not occur naturally. Originally expected to be a noble gas, it is now predicted to be a reactive metallic solid, and a semiconductor or a post-transition metal.ohunkakanTraditional Sioux evening stories.oleagenin(organic chemistry) The aglycone of various oleasides.oleandrin(chemistry) One of several glycosides found in the leaves of the oleander plant.olecranon(anatomy) The bony process at the top of the ulna forming the point of the elbow.olecrononMisspelling of olecranon.oleiferinAny of a group of antifungal lignans present in Virola oleiferaoleoresinA homogeneous mix of essential oil and resin.olfactionThe sense of smell; the detection of airborne molecules.ombudsmanAn appointed official whose duty is to investigate complaints, generally on behalf of individuals such as consumers or taxpayers, against institutions such as companies and government departments.ombudsmenplural of ombudsmanomegatronA kind of mass spectrometer using the principles of cyclotron acceleration.omination(obsolete) presage; omen.ommissionMisspelling of omission.oncostainA substance that stains cancerous tissue (in microscopic examination)oncostman(mining, historical) Any workman who was paid a daily rate.oneirogenAny drug, herb, etc. that produces or enhances a dream-like state of consciousness.oneration(obsolete) The act of loading or burdening.onionskinA thin, strong, light, translucent paper; used especially for making carbon copies.oorhodein(archaic) A reddish-brown pigment found in eggshells.oosporein(organic chemistry) A dibenzoquinone that is a toxic metabolite of the fungus Cochliobolus kusanoioperation(uncountable) The method by which a device performs its function.opinationThe state or process of opining.opiorphin(biochemistry) A painkilling chemical compound first isolated from human saliva.opisthion(anatomy) The middle of the posterior margin of the foramen magnum of the skull.oppletion(obsolete) The act of filling up.optimedin(biochemistry) A particular olfactomedinorangutanAn arboreal ape, characterised by their shaggy reddish-brown coat and long arms, which comprise the genus Pongo, native to Borneo and Sumatra.oratorianA member of a Roman Catholic oratory.orbofiban(pharmacology) An orally active platelet receptor antagonist.orchidean(botany) orchidaceousorcokininAny of a family of crustacean peptides that elicit potent myotropic effects in gut tissuesorellanin(organic chemistry) orellanineoreoselin(organic chemistry) A white crystalline substance which is obtained indirectly from the root of an umbelliferous plant, Oreoselinum majus (formerly Imperatoria oreoselinum), and yields resorcin on decomposition.organogen(chemistry, dated) Any of certain other elements sometimes found in organic compounds, such as sulphur and phosphorus.organotin(organic chemistry) Describing any organic compound containing a carbon to tin bondorpharion(music) A musical instrument of the Renaissance, part of the cittern family, whose metal strings are tuned like a lute's and plucked with the fingers.orpherionAlternative form of orpharion.ossamycinA particular cytotoxic agent.ostension(philosophy) The act of presenting an ostensive definition.osteocrin(biochemistry) A peptide that contributes to osteogenesis and chondrogenesis in some fishostracean(zoology, archaic) Any bivalve of the family Ostreidae; an oyster.ostruthin(organic chemistry) An organic compound found in the masterwort (Imperatoria ostruthium).otherwhen(rare) Other time (sometime else).otoferlin(biochemistry) A transmembrane protein which is defective in a recessive form of human deafnessotopetrin(biochemistry) Any of a group of transmembrane proteins associated with otoconia and with sensing the sour tasteotophysan(zoology) Any of the fish of the Otophysi series within the Ostariophysi superorder, also known as the Otophysa in some classifications.otterskinThe pelt of an otter.outbrazen(transitive) To bear down with a brazen face.outdesign(transitive) To surpass in design; to design better than.outhasten(transitive) To be faster than.outpoison(transitive) To surpass in poisoning.outreason(transitive) To surpass in reasoning; to reason better than.outreckon(transitive) To surpass in reckoning or computation.outredden(transitive, poetic) To surpass in redness.outriddenpast participle of outrideoutspokenSpeaking, or spoken, freely, openly, or boldly; vocal; frank.outstrain(transitive) To outdo by straining.ovalbumenAlternative form of ovalbumin.ovalbumin(biochemistry) A glycoprotein which is the primary constituent of egg white.ovastacin(biochemistry) An astacin found in oocytes, involved in the hardening of the zona pellucidaoveradorn(transitive) To adorn excessively.overalign(computing) To organise data with alignment greater that a compiler can handleoverblownOf exaggerated importance; too heavily emphasized, hyped, etc.overbrown(cooking, transitive) To brown too much.overclean(transitive) To clean to an excessive degree.overdrain(transitive) To drain excessively.overdrawnpast participle of overdrawoverdrown(transitive, obsolete) To drench or wet to excess.overeatenpast participle of overeatoverflownpast participle of overflyovergrain(art) To apply an additional layer of colour to graining, or imitation woodgrain.overgreen(transitive, poetic) To cover with greenery or a green color.overgrownHaving large numbers of plants which have become too big, and are hence spoiling the picturesqueness of a garden.overladenPacked heavily, especially beyond normal capacity; overloaded.overlearnTo learn (something) more than is necessary; to study excessively, to take (something) too much to heart.overmournTo mourn excessively.overplainExcessively plain.overqueen(rare) A superior or supreme queen; a female overking.overridenMisspelling of overridden.overripenTo ripen too much; to become overripe.overstain(transitive) To stain the surface of; besmear.overtakenpast participle of overtakeovertrain(ambitransitive) To train too much or too long.overwiden(ambitransitive) To make or become too wide.ovinationThe inoculation of sheep with ovine virus against sheeppox.ovispirin(biochemistry) Any of a group of ovine antimicrobial and cytotoxic cathelicidinsovoflavin(dated, biochemistry) riboflavinovostatin(biochemistry) Any of a class of proteinase inhibitors found in hens' eggs.ovulation(physiology) The release of an ovum from an ovary.oxachelinA particular iron chelator and antifungal agent isolated from Streptomycesoxacillin(pharmacology) A narrow-spectrum beta-lactam antibiotic made by chemical modification of penicillin and administered in the form of its hydrated sodium salt C₁₉H₁₈N₃NaO₅S·H₂O to treat infections caused by penicillin-resistant staphylococci.oxadiazonThe herbicide 5-tert-butyl-3-(2,4-dichloro-5-isopropoxyphenyl)-1,3,4-oxadiazol-2(3H)-oneoxalantin(organic chemistry) A nitrogenous substance, C₆H₄N₄O₅, obtained by the reduction of parabanic acid.oxaprozinA nonsteroidal anti-inflammatory drug.oxidationThe combination of a substance with oxygen.oximation(organic chemistry) Reaction with, or conversion into an oximeoxocarbon(organic chemistry) Any organic compound containing only atoms of carbon and oxygenoxolation(inorganic chemistry) A condensation reaction in which an oxo bridge is formed between two metal centres.oxycationA polyatomic ion that has at least one oxygen atom and an overall positive charge.oxycontinAlternative letter-case form of OxyContin.oxycotton(slang) Oxycodone used as a recreational drug.oxygenian(mineralogy) Containing oxygen.oystermanA person who cultivates, harvests or sells oystersoystermenplural of oystermanozonation(chemistry) The act of treating with ozone.