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abackstays(obsolete, nautical, of sails) Lined up in the direction of the wind and thus not propelled by the windabackwards(archaic) Alternative form of abackward.abasednessThe quality of being abased.abatementsplural of abatementabdicatorsplural of abdicatorabdominalsplural of abdominalabdominousHaving a protuberant belly; potbellied.abductionsplural of abductionabiogenous(biology) Produced by spontaneous generation.abjectnessThe state of being abject; abasement; meanness; servility.abolitionsplural of abolitionabomasitisinflammation of the abomasum in young ruminantsabominatesthird-person singular simple present indicative of abominateaboriginesplural of aborigineabroadnessThe state or quality of being abroad.abrogatorsplural of abrogatorabruptionsplural of abruptionabruptnessThe state of being abrupt or brokenabscondersplural of absconderabsentnessThe quality of being absent-minded.absorbantsplural of absorbantabsorbentsplural of absorbentabstainersplural of abstainerabstemiousRefraining from freely consuming food or strong drink; sparing in diet; abstinent, temperate.absteniousMisspelling of abstemious (or possibly of abstentious).absurdistsplural of absurdistabsurdness(rare) The quality of being absurd; absurdity.abundancesplural of abundanceacalculous(pathology) Not affected with, or caused by calculi (e.g. gallstones)acalephansplural of acalephanacanaceous(very rare) Bearing prickles or thistles; prickly.acanthosis(pathology) A benign abnormal thickening of the stratum spinosum, or prickle cell, layer of the epidermis.acanthusesplural of acanthusacardiacus(medicine) A deformed fetus having developed no heart, connected as a parasite to another fetus.acaricidesplural of acaricideacarpelousAlternative spelling of acarpellous.acatalexisacatalectic verseacathistusA Greek liturgical hymn in honour of Mary.acceleransA nerve that speeds up the heartbeat by emitting noradrenaline.accentless(of a person) Speaking without an accent.acceptress(rare) A female acceptor.accessionsplural of accessionaccessless(archaic, poetic) inaccessibleaccipitersplural of accipiteracclimatesthird-person singular simple present indicative of acclimateaccordionsplural of accordionaccretionsplural of accretionaccuraciesplural of accuracyaccuseress(rare) A female accuser.acephalousHaving no head.aceraceous(botany) Belonging to the family Aceraceae of maples and close relatives, now subsumed in family Sapindaceae, especially its subfamily Hippocastanoideae.acerbitous(archaic) acerbic; bitter; harshacetamidesplural of acetamideacetarious(archaic) Used in salads or as saladacetolysis(organic chemistry) The breakdown of an organic compound using either acetic acid or acetic anhydrideacetylatesthird-person singular simple present indicative of acetylateacetylenesplural of acetyleneachalasiasplural of achalasiaacidifiersplural of acidifieracidolysis(chemistry) Decomposition of a molecule under the influence of an acid.acinaceous(botany) Containing seeds or stones of grapes, or grains like them.acinarious(botany) Having aciniacoelomousSynonym of acoelomate.acondylous(anatomy) Without joints; jointless.aconuresis(pathology) urinary incontinence (inability to control urination)acornwormsplural of acornwormacousticksObsolete form of acoustics.acquiescesthird-person singular simple present indicative of acquiesceacquifiersMisspelling of aquifers.acquittalsplural of acquittalacriditiesplural of acridityacrimoniesplural of acrimonyacritarchsplural of acritarchacrobatessA female acrobat.acrobaticsThe art of performing acrobatic gymnastic feats.acrogenous(botany) Increasing by growth from the extremity.acrognosis(pathology) Normal sensory perception (cenesthesia) of the hands and feetacrogynous(botany) Producing archegonia from the apical cell of a reproductive branch.acronymousPertaining to the use of acronyms.acrorhagusAny of a set of marginal tubercles of sea anemones containing specialized nematocystsactionlessLacking action; particularly with respect to entertainment, dull, boring.actionness(philosophy, linguistics) The property of being an action.activatorsplural of activatoractivenessThe state or quality of being active.activitiesplural of activityactualisesthird-person singular simple present indicative of actualiseactualizesthird-person singular simple present indicative of actualizeactualnessThe state or quality of being actual.adactylousWithout fingers or without toes.adaptogensplural of adaptogenadaptomics(biology) The use of genomics in the study of adaptationaddictionsplural of addictionaddresseesplural of addresseeaddressersplural of addresseraddressorsplural of addressoradecticous(of a pupa) Having no mandiblesadenovirus(medicine) Any virus of the family Adenoviridae, many of which are responsible for respiratory infections in humansadeomatousMisspelling of adenomatous.adephagousgreedy, gluttonousadequaciesplural of adequacyadherencesplural of adherenceadipocytesplural of adipocyteadipokinesplural of adipokineadipolysis(anatomy, medicine) The process of converting fat into free fatty acids, especially by the action of enzymes.adipopexis(physiology) The storage of fat in tissue.adipositas(medicine) adiposity; obesityadipositisinflammation of the adipose tissueadipotaxismigration towards adipose tissueadjectivesplural of adjectiveadjustress(rare) A female adjuster.adlessness(informal, rare) Absence of advertisements.admiraless(rare) A female admiral.admissionsplural of admissionadmixturesplural of admixtureadmonishesthird-person singular simple present indicative of admonishadorationsplural of adorationadornmentsplural of adornmentadroitnessSkillfulness or ease of ability.adsorbentsplural of adsorbentadulationsplural of adulationadulatress(archaic) A female adulator.adulterersplural of adultereradulteressA female adulterer, a married woman or wife who commits adultery.adulteriesplural of adulteryadulterousOf, or characterized by adultery.adustiosis(rare) A reddish discolouration of the skin of a citrus fruit.advantagesplural of advantageadventuresplural of adventureadverbialsplural of adverbialadverblessWithout an adverb or adverbs.advertisesthird-person singular simple present indicative of advertiseadviceless(rare) Lacking advice.adviseressAlternative form of advisoress.advisoress(rare) A female advisor.advisoriesplural of advisoryadvocaciesplural of advocacyadvocatess(rare, obsolete) A female advocate.advoutress(obsolete) An adulteress.aerialistsplural of aerialistaerialnessThe state or quality of being aerial.aeriferous(of a tube etc) That conveys airaerobatics(aviation) The practice of flying maneuvers involving aircraft attitudes that are not used in conventional passenger-carrying flights.aerobiosesplural of aerobiosisaerobiosis(biology) Any form of life that is sustained by the presence of air (or oxygen)aerocolpos(rare, medicine) Vaginal gas; air or gas trapped in the vagina.aerodromesplural of aerodromeaerogenous(biology) Transmitted through the air.aeroliticsThe scientific study of aerolites.aerometersplural of aerometeraerophonesplural of aerophoneaerophytesplural of aerophyteaeroplanesplural of aeroplaneaeroponicsThe growing of plants without either soil or hydroponics but in a mist-laden atmosphere.aeruginousPertaining to copper rust; in particular, resembling the (bluish-)greenish colour of copper rust.aesthesicsThe study of perception, typically of musicaestheticsThe study or philosophy of beauty.aestivatesthird-person singular simple present indicative of aestivateaffadavitsMisspelling of affidavits.affairlessWithout an affair (adulterous relationship).affectionsplural of affectionaffectious(obsolete) affectionateaffectlessLacking or not showing emotion.affectuous(obsolete) passionate or affectionate.affidavitsplural of affidavitaffiliatesplural of affiliateaffinenessThe property of being affine.affinitiesplural of affinityaffricatesplural of affricateaflatoxinsplural of aflatoxinaforetimesplural of aforetimeaforetymesArchaic form of aforetimes.afraidnessThe state or quality of being afraid.afterdecksplural of afterdeckafterglowsplural of afterglowaftergrassThe grass that grows after the first crop has been mown.afterhoursAfter opening hours, usually after midnight and before daybreak.afterlivesplural of afterlifeaftermathsplural of aftermathafternoonsplural of afternoonafterpainsplural of afterpainaftersailsplural of aftersailaftersales(business) Alternative form of aftersale.aftertimesplural of aftertimeafterwards(temporal location) At a later or succeeding time; after that;afterwordsplural of afterwordafteryearssubsequent yearsagalactousLacking milk to suckle with.agapanthusAny member of the genus Agapanthus of flowering plants.agavaceous(botany, relational) Of or relating to the Agavaceae.agendalessWithout an agenda.aggravatesthird-person singular simple present indicative of aggravateaggregatesthird-person singular simple present indicative of aggregateaggressorsplural of aggressoraghastnessThe state or quality of being aghast.agitationsplural of agitationagomphosisLooseness of the teeth.agonisticsThe range of activities associated with aggressive encounters between members of the same species, including threat, attack, appeasement, or retreat.agoranomos(historical) An elected overseer of the marketplace in the cities of Ancient Greece and the Byzantine Empire.agreementsplural of agreementagricolousDwelling in the fields, especially as an agricultural laborer.agrimoniesplural of agrimonyagronomicsThe science of soil management and the production of field crops.aguishnessThe state or quality of being aguish.aichivirusAny virus of the genus AichivirusairbaglessNot equipped with airbags.airiferousAlternative form of aeriferous.airlettersplural of airletterairstreamsplural of airstreamairstrikesplural of airstrikeaisymnetesAlternative form of aesymnetes.aizoaceous(botany) Of or relating to the family Aizoaceae of fig-marigolds.akropoleisplural of akropolisalacritous(rare) Brisk, speedy, with alacrity, quick and eager.albondigasplural of albondigaalbuminousRelating to, containing, or having the properties of albumen or albumin.alcarrazasplural of alcarrazaalchemistsplural of alchemistalcoholicsplural of alcoholicalderfliesplural of alderflyalexandersAny of various umbellifers, often specifically Smyrnium olusatrum or Heracleum maximum, the cow parsnip.alfilariasplural of alfilariaalgaecidesplural of algaecidealgedonicsThe scientific study of pleasure and pain responses.algivorous(biology) algae-eatingalgogenousProducing pain.algorithmsplural of algorithmalignmentsplural of alignmentalimentous(obsolete) Nourishing; nutritional.alimoniousOf or related to alimony or divorce.aliphaticsplural of aliphaticalisandersAlternative form of alexanders (plant)aliteratesplural of aliteratealkadienesplural of alkadieneallamandasplural of allamandaallantoinsplural of allantoinallegoricsallegorical techniquesallegoriesplural of allegoryallemandesplural of allemandealleviatesthird-person singular simple present indicative of alleviatealliaceousSmelling or tasting of garlic or onion.alligatorsplural of alligatorallobiosis(biology) adaptation to changes in internal or external conditionsallocatorsplural of allocatorallogamous(botany) Characterized by allogamy.allogenousSynonym of allogeneous.allograftsplural of allograftallographsplural of allographalloknesis(medicine) Itch sensation in response to a normally non-itch-producing stimulus.allologous(medicine, rare) Synonym of allogeneic.allomerous(chemistry) Allomeric.allomorphsplural of allomorphallonomous(biology) Controlled by an external stimulusallonymousMisattributed: appearing or (especially) knowingly published under the name of a different person from the true author.allophonesplural of allophoneallosaurusA large, carnivorous dinosaur, of genus Allosaurus, that lived in the Jurassic period.allostasisThe process of achieving stability, or homeostasis, in the body, through physiological or behavioral change.allotmentsplural of allotmentallotrious(mathematics) Pertaining to the distinct classes or roles into which an element can be allotted.allotropesplural of allotropeallovenous(surgery) Relating to a vein from a donorallowancesplural of allowanceallozygous(genetics) Being a genotype of a kind where two alleles at a locus come from completely different sources, as in most normal, random mating.almandinesplural of almandinealmondlesswithout almondsalmostnessThe quality of almost being something, or almost reaching a point; incomplete state.almsgiversplural of almsgiveralmshousesplural of almshouse.alongsides(uncommon) Synonym of alongside.alpenglowsplural of alpenglowalpenhornsplural of alpenhornalphavirusAny virus of the genus Alphavirus (family Togaviridae).alternatesplural of alternatealtimetersplural of altimeteraltiplanosplural of altiplanoaltisonousAlternative form of altisonant.altmetricsNon-traditional metrics proposed as an alternative to the traditional ways to measure impact factorsaltriciousSynonym of altricial.alumbradosplural of alumbradoaluminizesthird-person singular simple present indicative of aluminizealuminosis(pathology) A disease of the lungs caused by aluminum dust.alutaceous(archaic, chiefly entomology) leathery in color or texture.alveolitis(medicine) An inflammation of the alveoli in the lungs.alwaysnessThe state, quality, or condition of being or lasting indefinitely or always; continuity; indefiniteness; eternity.alytarchesAlternative form of alytarch.amanuensesplural of amanuensisamanuensisOne employed to take dictation, or copy manuscripts.amaranthusAny of the genus Amaranthus; an amaranth.amatorious(obsolete) amatoryamazeballs(slang) Amazing.amazednessThe state or quality of being amazed.amazementsplural of amazementamberlamps(US, slang, humorous) An ambulance.ambigenousOf two kinds or natures.ambilevous(rare) Having equally bad ability in both hands; clumsy; butterfingered.ambiparous(botany) Producing two kinds, as when a bud contains both flowers and leaves, as in the horse chestnut.ambisonicsA form of surround sound reproduction, using two or more transmission channels and four or more speakers, that attempts to reproduce directional properties of the soundambivorous(chiefly biology) That feeds on a variety of foods of different kinds.ambosexous(obsolete) ambisexual; hermaphroditicambrotypesplural of ambrotypeambulancesplural of ambulanceambuscadesthird-person singular simple present indicative of ambuscadeamebicidesplural of amebicideamelanosis(pathology) A lack of melanin pigmentationamendmentsplural of amendmentamericanosplural of americanoamidolysis(organic chemistry) The cleavage of amide groups (especially of peptide bonds)aminoacidsplural of aminoacidaminolysis(organic chemistry) decomposition of a molecule by reaction with ammonia or an amineammonifiesthird-person singular simple present indicative of ammonifyamnicolous(biology) That lives by a river.amnionitisinflammation of the amnionamnionlessThat lacks an amnionamniotitisinflammation of the amnionamoebiasesplural of amoebiasisamoebiasis(biology, medicine, uncountable) Disease associated with the presence of amoebas.amoebiosis(pathology) Any disease caused by the presence of an amoeba or other protozoanamoralistsplural of amoralistamorphismsplural of amorphismampelopsisA vine of the genus Ampelopsisampersandsplural of ampersandamphibalusAn ecclesiastical vestment like the chasuble.amphibiansplural of amphibianamphibiousCapable of functioning on land or in water.amphibolesplural of amphiboleamphimixis(uncountable) sexual reproductionamplifiersplural of amplifieramplitudesplural of amplitudeampullitis(pathology) inflammation of an ampullaamputatorsplural of amputatoramusednessThe quality of being amused; amusement.amusementsplural of amusementamylaceous(dated) Pertaining to, or of the nature of, starch; starchy.amylolysisThe conversion of starch into sugar by the action of acids or enzymes such as amylase.anabolismsplural of anabolismanabolitesplural of anaboliteanadidymus(pathology) An abnormality in which conjoined twins have a single head and upper bodyanadromous(of a migratory fish) That lives in the sea and breeds in fresh water.anaerobicsanaerobic exerciseanaerobies(biology) anaerobesanagenesisThe evolution of a new species by the large scale change in gene frequency so that the new species replaces the old rather than branching to produce an additional species.analepticsplural of analepticanalgesicsplural of analgesicanalogizesthird-person singular simple present indicative of analogizeanalysisesMisconstruction of analyses.anapocosis(biology) A form of apoptosis, due to the formation of large pores, in some cancer cellsanaptychus(paleontology) One of a pair of shelly plates found in some cephalopods, such as the ammonites. They are now considered to have been parts of the jaw.anarchistsplural of anarchistanarthrous(linguistics) Not having an article (especially of Greek nouns).anasarcousBelonging to, or affected by, anasarca, or dropsy; dropsical.anatomistsplural of anatomistanatomizesthird-person singular simple present indicative of anatomizeanatripsisThe use of friction or rubbing as therapy, a form of massageanatropous(botany, of an ovule) Having an inverted nucleus, whose apex points to the base.ancestress(dated) A female ancestor.ancestriesplural of ancestryanchoragesplural of anchorageanchoritesplural of anchoriteanchorlessLacking an anchor; adriftanchylosis(anatomy, medicine) Alternative spelling of ankylosis.ancipitousSynonym of ancipital.androgynesplural of androgyneandrogynusA hermaphrodite.andromedasplural of andromedaanecdoticsThe use of anecdotes.anemotaxis(biology) Movement of an organism in response to air currents.anenterous(zoology) Without a stomach or an intestine.anesthesisAlternative form of anaesthesis.angeliquesplural of angeliqueangelwingsplural of angelwingangiogramsplural of angiogramangiolysisDisruption or destruction of a blood vessel, typically after tying of the umbilical cord of a neonateanglewormsplural of anglewormanglicisesthird-person singular simple present indicative of angliciseanglicismsplural of anglicismanglicizesthird-person singular simple present indicative of anglicizeangstiness(informal) The quality of being angsty; angst.anguishous(obsolete) Full of anguish.anhidrosis(medicine) The reduced ability or inability to sweat.anhydridesplural of anhydrideanhydrosisMisspelling of anhidrosis.anilinctusRare form of anilingus.animalizesthird-person singular simple present indicative of animalizeanimalnessThe quality of being animal; animality.animationsplural of animationanklebonesplural of ankleboneannelidansplural of annelidanannelidousOf or pertaining to annelidsannotatorsplural of annotatorannotinous(botany) A year old, or having yearly growths.announcersplural of announcerannoyancesplural of annoyanceannuitantsplural of annuitantannuitizesthird-person singular simple present indicative of annuitizeannulmentsplural of annulmentanonaceousAlternative form of annonaceous.anonymizesthird-person singular simple present indicative of anonymizeanorecticsplural of anorecticanorectous(archaic) anorectic; lacking appetiteanswerlessHaving or producing no answer.antechinusAny member of the genus Antechinus of small carnivorous Australian marsupials that resemble shrews.antennulesplural of antennuleanthelicesplural of anthelixanthelionsplural of anthelionanthemlessWithout an anthem.antherlessWithout anthers.anthozoansplural of anthozoananthropics(philosophy) Reasoning using the anthropic principle or related considerations about the presence of an observer constraining the nature of the reality that can be observed.anthuriumsplural of anthuriumantiaditis(archaic, rare) tonsillitisantibiosesplural of antibiosisantibiosis(ecology) An association between organisms that is detrimental (harmful) to one or more of them; especially that due to a metabolic substance produced by one of them.antibodiesplural of antibodyanticaries(dentistry) Preventing or countering caries.anticensusOpposing a census.anticircusOpposing circuses.anticlinesplural of anticlineanticodonsplural of anticodonanticrisis(politics) Intended to prevent or counter a crisis.antiemesis(medicine) The prevention of vomiting.antiflatus(pharmacology) Serving to prevent flatus.antifungusThat inhibits the growth of fungi.antiheroesplural of antiheroantiherpes(pharmacology) Countering herpes.antilightsOpposed or hostile to lightsantilogiesplural of antilogyantilogousOf the contrary name or character; opposite.antimoniesplural of antimonyantimonous(inorganic chemistry) Alternative form of antimonious.antinomiesplural of antinomyantipastosplural of antipastoantiptosis(grammar, rhetoric) Substitution of one grammatical case for another.antiquarksplural of antiquarkantirabies(pharmacology) Preventing or countering rabies.antirightsOpposing somebody's rights.antisepsis(hygiene) The science and practice of countering microbial infection, as with the use of antiseptics, and the use of aseptic technique.antiserumsplural of antiserumantistasis(rhetoric) The repetition of a word in an opposing sense.antistatusAgainst status (position or standing).antistressCountering stress.antitennisRare form of anti-tennis.antithesesplural of antithesisantithesisA proposition that is the diametric opposite of some other proposition.antithripsThat protects against infestation with thripsantitoxinsplural of antitoxinantitradesplural of antitradeantitragus(anatomy) A projection on the lower posterior portion of the auricle of the ear opposite the tragus.antityphusCountering typhus.antitypous(obsolete) resistant to blows; hardantiveninsplural of antiveninantivenomsplural of antivenomantiviralsplural of antiviralantlerlessWithout antlers.antoeciansplural of antoecian.antonymousSynonym of antonymic.anxiolysis(medicine) The reduction of anxiety by means of sedation or hypnosisapartmentsplural of apartmentapatosaursplural of apatosaurapehangersplural of apehangeraphaeresesplural of aphaeresisaphaeresis(UK, Canada) Alternative spelling of apheresis.aphorismus(rhetoric) A figure of speech that questions whether a word is properly used, as in "How can you call yourself a man?".apicolysis(surgery) excision of the apex of an anatomical part (typically lung or tooth)apocarpous(botany) Having carpels that are not joinedapocyneousRelating to, or resembling, the dogbanes of the genus Apocynum.apocytosis(pathology) An abnormal increase in the number of apocytesapodyopsis(neologism, rare) The act of gazing at a person and imagining them naked; a mental undressing.apologisesthird-person singular simple present indicative of apologiseapologistsplural of apologistapologizesthird-person singular simple present indicative of apologizeapomeiosis(cytology) A suppressed, or imperfect meiosisapophanous(psychology) Exhibiting or relating to apophany.apoplexiesplural of apoplexyapopotosisMisspelling of apoptosis.aposporous(botany) relating to aposporyapostasiesplural of apostasyapostillesplural of apostilleapostolessAlternative form of apostless (“a female apostle”).apotheosesplural of apotheosisapotheosisThe fact or action of becoming or making into a god; deification.appaloosasplural of appaloosaapparencesplural of apparenceappellantsplural of appellantappendagesplural of appendageappendecesMisspelling of appendices.appendicesplural of appendixappendixesplural of appendixappertainsthird-person singular simple present indicative of appertainappetisersplural of appetiserappetizersplural of appetizerapplaudersplural of applauderapplecartsplural of applecartapplejacksplural of applejackappletinisplural of appletiniappletreesplural of appletreeappleynessThe state or quality of being appley.appliancesplural of applianceapplicantsplural of applicantappointeesplural of appointeeapportionsthird-person singular simple present indicative of apportionappraisalsplural of appraisalappraisersplural of appraiserapprehendsthird-person singular simple present indicative of apprehendapproachesMovements to gain favour; advances.aptonymous(rare) Of or pertaining to aptonymy.aquabaticsacrobatic maneuvers performed underwateraquafortisAlternative form of aqua fortis.aquaplanesplural of aquaplaneaquaponics(agriculture) A sustainable food production system that combines traditional aquaculture with hydroponics, with effluent from the water in which fish are reared being used as nutrition for plants.aquaporinsplural of aquaporinaquarobicsAlternative form of aquaerobics.aquicolous(biology) Living in water.aquiferous(geology) Of or pertaining to an aquiferaquilegiasplural of aquilegiaaquiparous(medicine) Secreting water; applied to certain glands.arabesquesplural of arabesquearabinosesplural of arabinosearabinosis(pathology) Any condition caused by faulty metabolism of arabinosearachnitisAlternative form of arachnoiditis.arachnoidsplural of arachnoidaraucariasplural of araucariaarbitragesplural of arbitragearbitratesthird-person singular simple present indicative of arbitratearboretumsplural of arboretumarborvirusAlternative form of arbovirus.arcanenessThe quality of being arcane.archangelsplural of archangelarchetypesplural of archetypearchimagusAlternative form of archmagus.architectsplural of architectarchivistsplural of archivistarchivoltsplural of archivoltarchosaursplural of archosaurarchrivalsplural of archrivalarcminutesplural of arcminutearcologiesplural of arcologyarcsecondsplural of arcsecondardentnessThe state or quality of being ardent.arecaceous(botany) Of or relating to the family Arecaceae of palms.areligiousNot religious; irreligious.arenaceous(especially of soil) Sandy; characterised by sand.arenarious(archaic) sandyarenavirusAny of several RNA viruses, of the genus Arenavirus, most of which cause severe diseases transmitted by rodentsargenteous(formal) Silvery.argentinesplural of argentineargillitesplural of argillitearguteness(obsolete) The state or quality of being argute.argyriasis(pathology) Synonym of argyria.aristaless(biology) Without an arista.aristotlesplural of aristotlearmadillosplural of armadilloarmiferous(archaic, rare) Bearing arms (weapons).armigerousEntitled to bear a coat of arms.armisticesplural of armisticearmourlessAlternative form of armorless.aromatizesthird-person singular simple present indicative of aromatizearoundness(philosophy) The quality of being around.arpillerasplural of arpilleraarquebusesplural of arquebusearrearagesplural of arrearagearrivistesplural of arrivistearrowgrassAny of various grass-like plants of the genus Triglochin.arrowheadsplural of arrowheadarrowwormsplural of arrowwormarrythmiasplural of arrythmiaarsecheeksplural of arsecheekarseniasis(medicine) Chronic arsenic poisoning.arsenicalsplural of arsenicalarteriolesplural of arteriolearterwards(archaic) Pronunciation spelling of afterwards.artfulnessThe quality of being artful or of acting in an artful manner.arthropodsplural of arthropodartichokesplural of artichokeartificersplural of artificerarvicolousSynonym of arvicoline.arytenoidsplural of arytenoidasafetidasplural of asafetidaasbestosesplural of asbestosasbestosis(pathology) A chronic, inflammatory lung disease caused by long-term, heavy exposure to asbestos.ascariasisA disease of humans caused by the parasitic roundworm Ascaris lumbricoides in humans and by other species of Ascaris in other mammals.ascariosisAlternative form of ascariasis.ascendantsplural of ascendantascendentsplural of ascendentascensionsplural of ascensionascertainsthird-person singular simple present indicative of ascertainascigerous(botany) Having asci.ascococcus(bacteriology) A form of micrococcus, found in putrid meat infusions, occurring in peculiar masses, each of which is enclosed in a hyaline capsule and contains a large number of spherical micrococci.ascogenous(mycology) That grows from the ascogonium of a fungusascorbatesplural of ascorbateascosporesplural of ascosporeasfarvirusAny virus of the family Asfarviridae.aspalathusAny of the genus Aspalathus of flowering plants.aspectlessWithout aspect.asperitiesplural of asperityaspersionsplural of aspersionasperulous(botany) Slightly rough, due to minute small hard protrusions on the surface.aspiculousWithout spicules.aspiratorsplural of aspiratorassailantsplural of assailantassaultersplural of assaulterassburgersAlternative letter-case form of Assburgers.assemblersplural of assemblerassembliesplural of assemblyassertionsplural of assertionassertress(rare) A female assertor.asshatness(rare, derogatory, slang, vulgar) The quality of being an asshat.assishnessThe quality of being assish.assistantsplural of assistantassistlessWithout aid or help.associatesplural of associateassonancesplural of assonanceassumpsitsplural of assumpsitassurancesplural of assuranceasteatosis(pathology) Persistent dry scaling of the skin due to an absence or shortage of sebumasteriscus(anatomy) One of the otoliths found in the lagena of many nonmammalian vertebrates.asthmaticsplural of asthmaticastomatous(biology) Having no mouth, mouthless.astonishesthird-person singular simple present indicative of astonishastragalosAn ancient form of die (used in games of chance) made from the knucklebone of a sheep.astragalus(anatomy) Synonym of anklebone.astrakhansplural of astrakhanastrionics(astronautics) The science dealing with the application of electronics to astronautics.astrocytesplural of astrocyteastrodomesplural of astrodomeastrogatesthird-person singular simple present indicative of astrogateastronautsplural of astronautastrovirus(virology) Any member of the family Astroviridae of icosahedral viruses with a characteristic starlike surface structure.astutenessThe quality of being astute.asymbiosis(biology) A lack of symbiosis, especially in an organism that otherwise exhibits symbiosis.asymptotesplural of asymptoteataracticsplural of ataracticateleiosisAlternative form of ateliosis.atelomixisIncomplete vertical mixing of stratified water masses, homogenizing layers.athenaeumsplural of athenaeumathomenessAlternative spelling of at-homeness.athrodesisMisspelling of arthrodesis.athyreosis(medicine, pathology) Absence or complete dysfunction of the thyroid gland.atmometersplural of atmometeratomistics(physics) The study of atoms and their motion.atonalistsplural of atonalistatonementsplural of atonementatrichosis(pathology) Synonym of atrichia.atrocitiesplural of atrocityattaindersplural of attainderattendantsplural of attendantattendingsplural of attendingattendress(archaic) A female attendant.attentionsplural of attentionattenuatesthird-person singular simple present indicative of attenuateattractorsplural of attractorattributesplural of attributeattritionsplural of attritionauberginesplural of aubergineaudacitiesplural of audacityaudiogramsplural of audiogramaudiotapesplural of audiotapeaugmentersplural of augmenteraugustnessThe state or quality of being august or noble.auntlinessThe quality of being auntly.auricomousHaving golden hair; yellow-haired.auricularsplural of auricularauriferousContaining or producing gold; gold-bearing.aurigerousBearing or yielding gold; auriferous.auriscopesplural of auriscopeaurivorousGold-devouring.auspiciousOf good omen; indicating future success.auspitiousObsolete spelling of auspicious.austenitesplural of austeniteaustrealisMisspelling of australis.autarchiesplural of autarchyautarkistsplural of autarkistauthentics(civil law) A collection of the Novels or New Constitutions of Justinian, by an anonymous author.authorisesthird-person singular simple present indicative of authoriseauthorizesthird-person singular simple present indicative of authorizeauthorlessWithout an author.authouressObsolete form of authoress.autoclasis(pathology) destruction of tissue due to internal (or immunological) processesautoclavesplural of autoclaveautoclesis(rhetoric) The arousing of interest in something by mentioning it in a negative or dismissive way.autoctisis(theology, philosophy) The “pure act” of self-creation through being conscious of oneself.autoeciousOf a fungus, most often a rust: completing its life cycle on one host.autogamiesplural of autogamyautogamousself-fertilizingautogenicsautogenic trainingautogenousProduced independently of an external cause or influence.autognosisSelf-knowledge; the understanding of one's character and peculiarities.autograftsplural of autograftautographsplural of autographautologousDerived from part of the same individual (i.e. from the recipient rather than a different donor).autolysinsplural of autolysinautomakersplural of automakerautomaticsplural of automaticautomatonsplural of automatonautomatousObsolete form of automatic.autonoesisThe neurocognitive ability to experience time as a series of subjective episodes.autonomics(computing) The use of self-correcting software systems that automatically detect and fix certain types of error without intervention by a software engineer.autonomiesplural of autonomyautonomousGoverning itself independently.autonymous(of a symbol, word, term, etc) Exhibiting autonymy; used as a name for itself.autopilotsplural of autopilotautoroutesplural of autorouteautosporesplural of autosporeautothysis(biology) A process by which an animal destroys itself via internal rupture or explosion of an organ.autotomousExhibiting or relating to autotomy.autotoxinsplural of autotoxinautotrophsplural of autotrophautoxenousSynonym of autoecious.autozygous(genetics) Being a genotype of a kind where two alleles at a locus originate from a common ancestor by way of nonrandom mating (inbreeding).avalanchesplural of avalancheavariciousActuated by avarice; extremely greedy for wealth or material gain; immoderately desirous of accumulating property.avenaceousBelonging to, or resembling, oats or the oat grasses.avengeress(rare) A female avenger.averdupoisArchaic spelling of avoirdupois.aversenessThe quality of being averse; opposition of mind.aviatricesplural of aviatrixaviatrixesplural of aviatrixavocationsplural of avocationavowednessThe state or quality of being avowed.avulavirusAny member of the genus Avulavirus of viruses that infect birds.awakednessThe state or quality of being awaked.awakeningsplural of awakeningawlessnessArchaic form of awelessness.axillariesplural of axillaryaxiomaticsThe study of all the axioms associated with a particular subject.axogenesis(biology) The creation of axonsaxospinous(of a synapse) Situated on a dendritic spineayahuascasplural of ayahuascaayatollahsplural of ayatollahazidolysis(chemistry) The disruption of a bond by reaction with an (inorganic) azideaziridinesplural of aziridine