Browse Other A Word Lengths
18-Letter A Words by Ending Letter
All 313 18-Letter Words Starting With A
absofreakinglutely(slang, emphatic) Absolutely.acanthocephaliasis(pathology) A disease caused by infection by Acanthocephala worms.acanthonotozomatid(zoology) Any member of the family Acanthonotozomatidae of crustaceans.acanthopteroctetidAny moth of the family AcanthopteroctetidaeaccelerometricallyBy means of accelerometry.acceleromyographicRelating to acceleromyography.aceruloplasminemia(pathology) The lack of ceruloplasmin in the blood; the disorder associated with itacetamidocinnamate(organic chemistry) Any acetamido derivative of a cinnamateacetoxycholesterol(organic chemistry) Any acetoxy derivative of cholesterolacetoxypalladation(organic chemistry) A reaction in which an acetoxy group and a palladium atom are attached across a double bond (typically as the first step in another reaction)acetylglucosaminyl(organic chemistry, especially in combination) Any acetyl derivative of a glucosaminyl radicalacetylisoquinoline(organic chemistry) An acetyl derivative of isoquinoline whose thiosemicarbazones are antimalarial agentsacetyltransferasesplural of acetyltransferaseachlorophyllaceous(chiefly botany, rare) Lacking chlorophyll; hence colourlessacidostabilizationstabilization to the presence of acidacousticolateralis(ichthyology) A system of hearing and vibration detection in fishes.acousticopalpebral(anatomy) relating to the auditory cranial nerve and the eyelidacoustoelectronics(physics) A branch of electronics that involves microwave sound waves travelling through specialized solids.acrohyperkeratosisThe thickening of the horny layer of the skin.actinotherapeuticsactinotherapyacylphloroglucinol(organic chemistry) Any acyl derivative of phloroglucinoladenoameloblastoma(pathology) A benign adenomatoid odontogenic tumouradenocarcinomatousOf or pertaining to adenocarcinomasadenocorticotropicMisspelling of adrenocorticotropic.adenomyoepithelialadenomyomatous and epithelialadenosylmethionine(biochemistry) An adenosyl derivative of methionine that is a common co-substrate involved in transmethylationadenotonsillectomy(surgery) The surgical removal of the adenoids and tonsils, combination of adenoidectomy and tonsillectomyadministrativenessThe quality of being administrativeadministratrixship(rare) The state or position of being an administratrix.aequihymeniiferous(mycology) Having basidia maturing all over the surface of each lamella at once, not leaving patches of less matured spores.aerothermodynamics(physics) The scientific study of the thermodynamic properties of gases, especially when travelling at a high velocity.aethiopathologicalMisspelling of etiopathological.afroinsectiphilianAny insectivorous mammal of the clade Afroinsectiphilia.agammaglobulinemia(medicine) A condition in which gammaglobulins such as immunoglobulins are absent from the blood, or present only in low concentrationsagammaglobulinemicRelating to or exhibiting agammaglobulinemia.agribusinesspersonA businessperson involved in agribusiness.agroclimatologicalRelating to agroclimatology.agrometeorologicalRelating to agrometeorology.agrotransformation(genetics) Agrobacterium-mediated transformation, usually performed on plants to introduce new genesalbrechtschraufite(mineralogy) A triclinic-pinacoidal yellow green mineral containing calcium, carbon, fluorine, hydrogen, magnesium, oxygen, and uranium.algoneurodystrophyA form of complex regional pain syndrome without demonstrable nerve lesions.algorithmicizationThe process of algorithmicizing.algorithmizabilityThe quality of being algorithmizable.alkenylzirconocene(organic chemistry) Any alkenyl derivative of a zirconocenealkylbenzimidazole(organic chemistry) Any alkyl derivative of benzimidazolealkylcyclohexanone(organic chemistry) Any alkyl derivative of cyclohexanonealkylhydroperoxide(organic chemistry) Any alkyl hydroperoxidealkylhydroxylamide(organic chemistry) Any alkyl derivative of a hydroxylamidealkylideneaminoxyl(organic chemistry) Any univalent radical of the form R₂C=N-O- (where R is an alkyl group)allenylphosphonate(organic chemistry) Any phosphonate that also has an allene groupallodiploidization(genetics) Conversion to allodiploid formalloperiplocymarinA particular steroid glycoside.allotetraploidizedConverted to allotetraploid formallotetrapolyploid(genetics) allotetraploidallylglucosinolate(organic chemistry) sinigrinalphacetylmethadol(pharmacology) A synthetic opioid analgesic.alphaphotographicsA display made up of text characters combined with high-resolution photographic images (proposed as a future form of videotex).aluminothermicallyBy means of aluminothermy.alumoklyuchevskite(mineralogy) A monoclinic-sphenoidal dark green mineral containing aluminum, copper, oxygen, potassium, and sulfur.amidinotransferase(biochemistry) Any of a group of enzymes that catalyze the transfer of amidinos.aminoanthraquinone(organic chemistry) Either of two isomeric amino derivatives of anthraquinoneaminobenzimidazole(organic chemistry) Any amino derivative of a benzimidazoleaminobenzothiazole(organic chemistry, medicine) Any amino derivative of a benzothiazole, many of which show antitumor and antimicrobial activityaminobenzotriazole(organic chemistry) Any amino derivative of benzotriazoleaminocarbonylation(chemistry) Any reaction that forms an amide bond between an amine and a carbonyl compound.aminocephalosporinAny of a class of antibiotics that are amino derivatives of cephalosporinsaminochronologicalSynonym of aminostratigraphic.aminoeicosanetriol(organic chemistry, very rare) Any amino derivative of an eicosanetriolaminohydroxylation(organic chemistry) Any addition reaction in which an amino and a hydroxyl group are added across a double bond or triple bondaminomalononitrile(organic chemistry) The amino derivative of malononitrile NH₂CH(C≡N)₂ that is used to synthesize amino acidsaminopolypeptidase(biochemistry) The enzyme cytosol alanyl aminopeptidase.aminopropionitrileA nitrile, used as an antirheumatic in veterinary medicine, that can be prepared by the reaction of ammonia with acrylonitrile.aminoquinazolinone(organic chemistry) Any C- or N- amino derivative of quinazolinoneaminostratigraphicRelating to, or using aminostratigraphyamphisphaeriaceous(mycology) Belonging to the family Amphisphaeriaceae.amphitheatricalityThe state of being amphitheatrical.anaesthesiologicalAlternative form of anesthesiological.anaesthesiologistsplural of anaesthesiologistanarcholibertarianAlternative form of anarcho-libertarian.anarchoprimitivismAlternative form of anarcho-primitivism.anarchoprimitivistAlternative form of anarcho-primitivist.anarchosyndicalismAlternative form of anarcho-syndicalism.anarchosyndicalistAlternative spelling of anarcho-syndicalist.anatomopathologistA pathologist whose speciality is anatomopathologyandrohermaphrodite(botany) That produces both male and bisexual flowersandrostadienedione(organic chemistry) The prohormone androsta-1,4-diene-3,17-dione ((8R,9S,10R,13S,14S)-10,13-dimethyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthrene-3,17-dione)anemarrhenasaponinA particular steroid glycoside.angioarchitectonicRelating to angioarchitectonicsangioarchitectural(anatomy) Relating to angioarchitectureangioblastomatosisvon Hippel–Lindau diseaseangiocardiographicRelating to angiocardiography.angiocardiokineticCausing the dilation of the heart and blood vessels.angiocholecystitisAn inflammation of the gall bladder wall and adjacent bile vessels.angioimmunoblastic(pathology) Relating to, or characterised by immunoblasts of lymph glandsangioleiomyolipomaAlternative form of angiomyolipoma.angiolipoleiomyoma(pathology) An acquired solitary asymptomatic acral nodule, characterized histologically by well-circumscribed subcutaneous tumours composed of smooth muscle cells, blood vessels, connective tissue, and fat.angioproliferationThe proliferation of blood vesselsangioproliferativeRelating to, or causing angioproliferationangioscintigraphicRelating to angioscintigraphy.angiostrongyliasis(medicine) Infection by a nematode of the genus Angiostrongylus.angiotensinogenase(biochemistry) reninanhydromuropeptide(biochemistry) A muropeptide containing a (normally terminal) anhydrosugaranhydrovinblastine(pharmacology, oncology) One of two vinca alkaloids useful in the treatment of cancer.anilinonaphthalene(organic chemistry) Any anilino derivative of naphthaleneanilinophthalazine(organic chemistry) Any heterocycle composed of an aniline linked to a phthalazine via its nitrogen atomanilinoquinazoline(organic chemistry) Any heterocycle composed of an aniline linked to a quinazoline through its nitrogen atomanisodiametricallyIn an anisodiametric manneranisohypermetropiahypermetropia to a different extent in each eyeanisohypermetropicRelating to anisohypermetropiaanterioposteriorlyAlternative form of anteroposteriorly.anterodorsolateralanterior and dorsolateral; anterodorsal and lateralanthropobiologicalbioanthropologicalanthropocentricismAlternative form of anthropocentrism.anthropocentricityThe quality of being anthropocentric.anthropogenizationThe process, or the result of anthropogenizinganthropogeographerOne who studies anthropogeography.anthropogeographic(anthropology) Relating to anthropogeographyanthropolinguistic(linguistics) Relating to anthropolinguistics.anthropometricallyBy means of, or in terms of, anthropometry.anthropomorphisingpresent participle and gerund of anthropomorphiseanthropomorphisticSynonym of anthropomorphic.anthropomorphitismAlternative form of anthropomorphism.anthropomorphizingpresent participle and gerund of anthropomorphizeanthropomorphology(biology) Human morphology.anthropomorphouslyIn an anthropomorphous manner; in a manner resembling that of a human.anthropopathicallyIn an anthropopathic manner.anthroporadiometry(physics, medicine) The measurement of the radiation emitted by all or part of the human body, in order to identify the radionuclides present and to evaluate their activityanthroposomatology(dated, rare) The sum of knowledge regarding the human body, comprehending anatomy, physiology, pathology, etc.anthroposophicallyIn terms of anthroposophy.anthropotechnologyThe study and improvement of working and living conditions.antiadministration(politics) Opposing a particular administrationantiangiogenicallyIn an antiangiogenic mannerantiarrhythmogenic(pharmacology) That counters arrhythmogenesisantiatherogenicityThe condition of being antiatherogenicantibioprophylaxisantibiotic prophylaxisantibronchospastic(medicine) Preventing bronchospasm.anticarcinogenesisSynonym of anticarcinogenic.anticardiovascularThat prevents cardiovascular diseaseanticentralizationOpposing centralization.anticholesteraemicAlternative form of anticholesteremic.anticholinesterase(pharmacology) Any agent that inhibits the activity of cholinesterase.anticivilisationalRare spelling of anti-civilizational.anticivilizationalAlternative form of anti-civilizational.anticlastogenicityThe condition of being anticlastogenicanticonstitutionalOpposing a constitution.anticonstructivismOpposing constructivism.anticounterfeitingThe prevention or combating of counterfeiting.anticountermeasureA countercountermeasure.anticyanobacterialActive against cyanobacteria.anticybersquattingPreventing cybersquatting.antidemocraticallyContrary to democracy; in a way that opposes democracy.antidisciplinarianOpposing discipline.antidiscrimination(law) Opposing or disallowing discriminationantidiscriminativeOpposing or disallowing discrimination.antidiscriminatoryOpposing or disallowing discrimination.antiecclesiasticalOpposing the church.antiechinococcosicThat counters echinococcosisantiegalitarianism(sociology) Opposition to egalitarianism.antiestrogenicallyIn an antiestrogenic mannerantiferroelectrics(physics) The study or use of antiferroelectric materials, and of antiferroelectricityantiferromagnetism(physics) a phenomenon, similar to ferromagnetism, in which magnetic domains line up in a regular pattern, but with neighbouring electron spins pointing in opposite directions; materials showing this effect are either ferrimagnetic or diamagnetic, and become paramagnetic above the Neel temperatureantifibrillizationThat counters the formation of fibrilsantifibromatogenicOpposing fibromatogenesis; serving to counteract the formation of fibromata.antifraternizationPreventing or opposing fraternization, as between employees.antifrustrationism(philosophy) The axiological view that frustrated preferences create a negative moral 'debit' which can be canceled out through their satisfaction. Thus, satisfying a desire that already exists is good, but creating a new satisfied desire is not.antifrustrationistA person who adheres to the philosophy of antifrustrationism.antifundamentalismOpposition to fundamentalism.antifundamentalistOne who opposes fundamentalism.antiglucocorticoidThat counters the effect of glucocorticoid hormonesantihaemagglutininThat counters the effects of haemagglutininantihepatotoxicityThe quality of being antihepatotoxic.antihyperglycaemicAlternative spelling of antihyperglycemic.antihyperlipidemic(medicine) hypolipidemicantiimmunoglobulin(immunology) That produces an immune reaction with immunoglobulinantilatitudinarianOpposing a latitudinarian stance.antileishmanicidalMisspelling of antileishmanial.antilibertarianismOpposition to libertarianism.antimatrimonialistOne who opposes matrimony.antimedicalizationOpposing medicalization.antimetaphysicallyIn an antimetaphysical manner.antimineralisationAlternative form of antimineralization.antimineralizationThat counters mineralizationantiministerialistSomeone opposed to government ministers or ministries.antimonylgluconate(organic chemistry) A gluconate of antimony and another metalantiochratoxigenicThat counters ochratoxigenic fungiantiorganizationalAlternative form of anti-organizational.antiosteoarthritic(medicine) Countering osteoarthritis.antipatheticalnessThe state or quality of being antipathetical.antiphagocyticallyIn an antiphagocytic mannerantiphosphorylated(molecular biology, immunochemistry) Bonding specifically to a phosphorylated antigenantiplasticizationThe reduction if the plasticity of a polymer by the use of additivesantipredestinarian(theology) Opposed to the doctrine of predestination.antiprogestationalThat counters the secretion of progesterone (and thus of the onset of pregnancy)antiprogressionistOne who opposes progress.antiprohibitionistOne who opposes the prohibition of alcoholic drink.antiprothrombinaseAny substance that counters the function of prothrombinaseantipsychoanalyticOpposing psychoanalysis.antiradicalizationOpposing radicalization.antirecombinogenicThat counters the production of recombinant DNAantireductionistic(philosophy) Opposing reductionism; exhibiting or relating to antireductionism.antirehabilitationOpposing rehabilitation.antireservationistA person of antireservation beliefs (in either sense).antirestrictionistAn opponent of placing restrictions on something.antiscientificallyIn an antiscientific manner.antisegregationism(politics) opposition to segregationismantisegregationist(politics) One who opposes racial segregation.antisensationalismThe opposition to the use of sensational subject matter, style or methods.antiserotoninergicAlternative form of antiserotonergic.antistaphylococcal(immunology) That counters Staphylococcus infectionantistaphylococcic(medicine) Countering staphylococcic infection.antisymmetrisationNon-Oxford British English standard spelling of antisymmetrization.antisymmetrization(mathematics) The act of making antisymmetric.antithromboembolicCountering thromboembolism.antithrombomodulinInhibiting thrombomodulin activity.antithromboplasticOpposing the effects of thromboplastin.antithromboplastinSynonym of TFPI (“tissue factor pathway inhibitor”).antitraditionalism(sociology) Opposition to traditionalism.antitraditionalist(sociology) An opponent of traditionalism.antitransportationOpposing the transportation of criminals.antitrinitarianism(theology) Rejection of the Trinitarian doctrine that God subsists as three distinct persons in the single substance of the Holy Trinity; nontrinitarianism.antitrypanosomallyIn an antitrypanosomal mannerantitrypanosomatidThat counters trypanosomatid infectionsantiutilitarianism(philosophy) Opposition to utilitarianism.antivaccinationismOpposition to vaccination.antivaccinationistOne who opposes vaccination.antivivisectionismOpposition to vivisection.antivivisectionistA person opposed to the practice of vivisection.apanthropinisation(rare) The broadening of the ambit of one’s preoccupations and concerns away from a narrow focus on those things most palpably human and most closely pertinent to humanity.apanthropinizationAlternative spelling of apanthropinisation.apophthegmaticallyAlternative form of apothegmatically.aptahistochemistryThe use of aptamers in histochemistry (specifically in immunohistochemistry)arabinosylcytosine(organic chemistry, medicine) A cytidine analog, formed from arabinose and cytosine, that has antiviral and anticancer activity.arachibutyrophobia(humorous, rare) Fear of peanut butter sticking to the roof of one's mouth.archaeobotanicallyWith reference to, or by means of archaeobotanyarchaeographicallyin an archaeographical sensearchaeoinformatics(archaeology, computer science) The application of informatics to archaeologyarchaeolinguisticsThe study of the distant human past using archaeological and linguistic evidence together to reconstruct aspects of past cultures.archaeopteridaleanRelating to the archaeopteridsarchaeothanatologyAlternative form of archeothanatology.archeoastronomicalAlternative spelling of archaeoastronomical.archsegregationistA primary segregationist; a strong supporter of segregation.arctometatarsalian(anatomy) Having arctometatarsalsargentopentlandite(mineralogy) An isometric-hexoctahedral bronze brown mineral containing iron, nickel, silver, and sulfur.argilloferruginous(soil science) Containing clay and iron.arginyltransferase(biochemistry) A transferase that transfers an arginyl group, typically to a proteinaristocraticalnessThe state or quality of being aristocratical.aristodemocraticalAlternative form of aristodemocratic.arsenophenylglycin(organic chemistry) An arsenic compound used to treat trypanosomiasis in animals.arsenuranospathite(mineralogy) A tetragonal-dipyramidal mineral containing aluminum, arsenic, hydrogen, oxygen, and uranium.artefactualizationAlternative form of artifactualization.arteriographically(medicine) By means of, or in terms of, arteriography.arteriolocapillaryRelating to the arterioles and the capillaries.arteriolosclerosis(pathology) Hardening, narrowing or loss of elasticity in the arterioles.arteriolosclerotic(pathology) Relating to arteriolosclerosis.arterioportography(medicine) arterial portographyarterioventricular(anatomy) Of or relating to the spatial relationship or communication between the great arteries and the ventricles of the heart.arthrodermataceous(mycology, relational) Of or relating to the Arthrodermataceae.artifactualizationAct or process of artifactualizing.asialoglycoprotein(biochemistry) Any glycoprotein from which the sialic acid residues have been removedasialotriantennary(biochemistry) Describing a triantennary oligosaccharide that has no sialic acid componentasteriacerebrosideAny of a group of cerebroside glycosides produced by starfish of the class AsteroideaasteroseismologistOne who studies asteroseismology.astragalocalcaneal(anatomy) Describing the fusion of the astragalus and calcaneum.astragalocalcanean(anatomy) Relating to the astragalus and the calcaneusastragalocalcaneumA fused astragalus and calcaneumastrochronologicalRelating to astrochronology.astroglaciologicalOf or pertaining to astroglaciology.astrometeorologistA scientist working in the field of astrometeorology.astrophotographersplural of astrophotographerastrophotometricalRelating to astrophotometry.astroseismologicalRelating to astroseismology.asynchronisticallyIn an asynchronistic manner.atherodegenerativeThat causes atherodegenerationatherothrombogenicThat causes or leads to atherothrombosisatlantoepistrophicSynonym of atlantoaxial.atmospherelessnessThe absence of an atmosphere.atropodiastereomer(organic chemistry) A diastereomeric atropoisomerausktribosphenidanAny therian of the family AusktribosphenidaeaustralobatrachianAny frog of the suborder Australobatrachiaaustralopithecinesplural of australopithecineautassassinophilia(psychiatry) A paraphilia in which an individual is sexually aroused by the risk of being killed.autobiographicallyIn an autobiographical manner.autobioluminescentRelating to autobioluminescenceautocapitalizationThe automatic capitalization of words by a word processor, as at the beginning of a sentence.autocategorisation(computing) Automatic categorisation.autocategorization(computing, chiefly US) Automatic categorization.autocitrullination(biochemistry) citrullination of or by a citrullinated enzymeautoclassification(computing) Automatic classification.autodefenestration(rare, originally a nonce word) The act of hurling oneself from a window, especially lethally.autodeubiquinationMisspelling of autodeubiquitination.autodeubiquitinate(transitive) To cause autodeubiquitination in.autodiploidization(genetics) The process of becoming autodiploidautoethnographicalSynonym of autoethnographic.autoimmunoanalyzer(immunology) An automatic immunoanalyzerautometallographicOf or pertaining to autometallography.autophagolysosomalRelating to autophagolysosomes.autophosphorylatedsimple past and past participle of autophosphorylateautopolymerization(dentistry) The process by which an autopolymer hardens.autopsychoanalysispsychoanalysis of oneselfautoradiobiographyautoradiography of biological materialsautoradiographicalAlternative form of autoradiographic.autoreferentialityThe quality of being autoreferential; self-reference.autorefractometricRelating to autorefractometryautoregressivenessThe condition of being autoregressiveautosplenectomizedsimple past and past participle of autosplenectomizeautosuggestibilityThe quality of being autosuggestible.autotransformationA self-induced transformationautotransfusionistAn autotransfusion technician.autoubiquitination(biochemistry) Self-ubiquitination by a ubiquitinating enzyme, usually an E3 or E4 ubiquitin ligase. This activity can be direct, as in monoubiquitin of a lysine residue on the E3 or E4 itself, or indirect, through addition of ubiquitin to an existing polyubiquitin chain that is attached to the E3 or E4.autoubiquitylationautoubiquitinationautovasoregulationThe autoregulation of vascular tensionautovasoregulatoryRelating to autovasoregulationazidophenylalanine(organic chemistry) Any azido derivative of phenylalanine but especially 4-azidophenylalanine
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