English words: araneofauna to arcadian

300 English words, part 115 of 158 of the words starting with A, A to Z. 34 have a page of their own.

English words araneofauna to arcadian

araneofauna noun: The population of spiders inhabiting a region.
araneoid noun: Any spider of the superfamily Araneoidea.
araneological adjective: Relating to araneology.
araneologist noun: One who studies spiders.
araneology noun: The study of the spider, a branch of arachnology.
araneomorph noun: Any of the Araneomorphae, a suborder of spiders whose fangs cross with a pinching action.
araneophage noun: Any araneophagous organism.
araneophagic adjective: That eats spiders.
araneophagous adjective: That feeds on spiders (of the order Araneae).
araneophagy noun: The quality of being araneophagous.
araneophobe noun: Synonym of arachnophobe.
araneophobia noun: Synonym of arachnophobia.
araneose adjective: Resembling a spider's web; arachnoid.
araneosene noun: Synonym of dolabellane.
araneous adjective: Extremely thin and delicate, like a cobweb.
aranga noun: Among Siberian peoples, a platform on which the body of a deceased human, usually a shaman (or his horse), is placed, as a form of sky burial.
arangetram noun: In Indian classical dance, the debut onstage performance of a dance student.
arango noun /əˈɹæŋɡəʊ/: A rough carnelian bead, formerly used in Africa as currency when buying slaves for the slave trade.
aranidipine noun: A calcium channel blocker.
Aranjuez proper noun: A city in the south of the Community of Madrid, Spain.
aranology noun: Alternative form of araneology.
aranotin noun: An antiviral drug.
Aransas proper noun: A river in South Texas, United States.
Arant proper noun: A surname.
Aranyaka noun: Any part of the ancient Indian Vedas concerned with the meaning of ritual sacrifice.
aranzada noun: A traditional Spanish unit of land area, equivalent to about 4472 m², chiefly used for vineyards and olive groves.
Araona noun: An indigenous people of South America.
arapahite noun: A dark, fine-grained magnetite basalt mineral.
Arapaho noun /əˈɹeɪpəhoʊ/: A member of a Native American people of Wyoming and Oklahoma.
arapaima noun /ˌɑːɹəˈpaɪmə/: Any large, bonytongue fish in the genus Arapaima, native to the Amazon and Essequibo basins of South America.
arapaimid noun: Any fish of the family Arapaimidae
arapaimin noun: Any fish of the genus Arapaima
Arapawa noun: A kind of feral sheep of Arapaoa Island in New Zealand.
Arapesh adjective, noun: A people of Papua New Guinea.
araphid noun: Any pennate diatom that lacks raphes
araphorostic adjective: Seamless, unsewn.
araphostic adjective /ˌæɹ.əˈfɑs.tɪk/: Alternative form of araphorostic.
araponga noun: Synonym of bare-throated bellbird (Procnias nudicollis)
arapunga noun: Alternative form of araponga.
araq noun: Alternative form of arak.
araqi noun: Alternative form of araki.
arara noun: The palm cockatoo, native to Australia and the Malay Archipelago (Probosciger aterrimus).
araracanga noun: Synonym of scarlet macaw.
ararao noun: arrowroot (Maranta arundinacea)
Ararat proper noun /ˈæɹəˌɹæt/: Mount Ararat, the tallest mountain of Turkey and of the entire Armenian Highland. In Armenian antiquity known as Masis, it became associated with the...
ararauna noun: A blue-and-yellow macaw (Ara ararauna).
arare noun: A Japanese confection made from small pieces of mochi (glutinous rice cakes) that are fried and usually flavored with soy sauce or other flavorings.
arariba noun: Any of the trees of three species in the genus Centrolobium (family Fabaceae), especially, a Brazilian tree (Centrolobium robustum) -- called also zebrawood.
araroba noun: Goa powder
araru noun: arrowroot (Maranta arundinacea)
arasaid noun: Alternative form of earasaid.
Arata proper noun: A surname from Italian.
aratdar noun: A person who owns or runs a warehouse
arati noun: Alternative form of aarti.
aration noun: ploughing, tillage
arational adjective /eɪˈɹaʃ(ə)nəl/: Not within the domain of what can be understood or analyzed by reason; not rational, outside the competence of the rules of reason.
arationality noun: The state or characteristic of being arational, of being outside the domain of reason.
Aratus proper noun /əˈɹeɪtəs/: A healer and a son of Asclepius and his lover, Aristodama, and the paternal halfbrother of Aceso, Aglaea, Hygieia, Iaso, Meditrina, Panacea, Machaon,...
Arau proper noun: Alternative form of Aarau (“Municipality and town, the capital of Aargau canton, in northern Switzerland”).
Arauan adjective: Alternative form of Arawan.
Arauca proper noun: A department of Colombia.
Araucana noun: A type of poultry notable for laying blue or green eggs.
Araucanization noun: The process of expansion of the Mapudungun language and other elements of the Mapuche culture from its homeland Araucania into the plains of Patagonia, so...
araucaria noun /arɔːˈkɛːri.ə/: An individual plant (tree) of the genus Araucaria.
araucariacean noun: Any conifer of the family Araucariaceae
araucariaceous adjective: Of or relating to the Araucariaceae.
araucarian adjective, noun /ˌæɹɔːˈkɛə.ɹi.ən/: Relating to, or of the nature of, trees of family Araucariaceae.
araucarioid adjective: Resembling or characteristic of the genus Araucarioides.
araucarolone noun: The diterpenoid (2R,4aR,4bS,7S,10aR)-2-hydroxy-7-(2-hydroxyacetyl)-1,1,4a,7-tetramethyl-2,4,4b,5,6,8,10,10a-octahydrophenanthren-3-one present in some...
Arauco proper noun: A province in Biobío region, Chile.
Araujo proper noun: A surname from Spanish.
Arauz proper noun: A surname.
Aravaipa noun: A member of an Apache people of southeastern Arizona.
aravaipaite noun: A monoclinic-prismatic colorless mineral containing aluminum, fluorine, hydrogen, lead, and oxygen.
Aravalli proper noun: A mountain range running through the states of Rajasthan, Gujarat, Haryana and Delhi, India.
aravani noun: A Tamil hijra.
Arawa proper noun: An extinct language of Brazil.
Arawak adjective, noun: A member of an Amerindian people who lived in the region of the Caribbean when the Spanish arrived in America.
Arawakan adjective: Of or relating to a language family that developed among ancient indigenous peoples in South America and migrated to Central America and the Greater...
Arawakanist noun: A linguist who specialises in studying Arawakan languages.
Arawakian adjective, noun: Arawak
Arawan adjective: Belonging to a language family spoken in parts of western Brazil and Peru.
arawana noun: Alternative form of arowana (“type of fish”).
araxoceratid noun: Any any of the extinct ammonites in the family Araxoceratidae.
Aray proper noun: A river in Argyll and Bute council area, Scotland, that flows into Loch Fyne at Inveraray.
Araya proper noun: A surname.
arayes noun: A Levantine dish made from kofta and pita
arb noun, verb: Initialism of angiotensin receptor blocker.
arba noun: Alternative spelling of araba.
arbable adjective: Arbitrageable; capable of being arbed.
Arbaces proper noun: The first king of Media according to Ctesias
arbaciid noun: Any sea urchin in the family Arbaciidae.
arbacin noun: A substance prepared from the sea urchin of genus Arbacia.
arbaclofen placarbil noun: A prodrug of R-baclofen, formerly under development as a potential treatment for patients with GERD and spasticity due to multiple sclerosis.
arbajo noun: A kind of traditional four-stringed lute originating from Nepal.
arbakai noun: A Pashtun tribal militia in Afghanistan.
arbalest noun /ˈɑːbəlɪst/: A steel crossbow.
arbalester noun: Alternative form of arbalister.
arbalestrier noun: A crossbowman.
arbalet noun: Alternative form of arbalest.
arbalist noun: Alternative form of arbalest.
arbalister noun: A crossbowman.
Arbane noun: A French white grape variety.
arbanne noun: Alternative form of Arbane.
arbaprostil noun: A prostaglandin analogue.
Arbaugh proper noun: A surname.
ARBD noun: Initialism of alcohol-related brain damage.
arbekacin noun: A semisynthetic aminoglycoside antibiotic.
Arbela proper noun /ɑːˈbiːlə/: An ancient city in Mesopotamia, in modern Iraq; modern Arbil.
arbelest noun: Alternative form of arbalest.
arbelos noun: A plane region bounded by a semicircle of diameter 1, connected to semicircles of diameters r and (1 − r), all oriented the same way and sharing a common...
arbequina noun: A Spanish olive cultivar.
arber noun: One who engages in arbitrage; an arbitrageur.
Arbib proper noun: A surname.
arbidol noun: An antiviral drug against influenza.
Arbil proper noun: A city in Iraqi Kurdistan, Iraq.
arbit adjective: Strange, random or weird.
arbitary adjective: Of or pertaining to arbitration; possessing the authority of an arbiter.
arbiter noun, verb /ˈɑː.bɪ.tə(ɹ)/: A person appointed, or chosen, by parties to determine a controversy between them; an arbitrator.
arbiter elegantiae noun: An arbiter of good taste or proper behavior.
arbiter elegantiarum noun: An authority on manners or etiquette.
arbitrability noun: The characteristic of being arbitrable; the ability to be arbitrated.
arbitrable adjective: Able to be arbitrated; subject to arbitration.
arbitrage noun, verb /ˈɑɹbɪˌtɹɑʒ/: A market activity in which a security, commodity, currency or other tradable item is bought in one market and sold simultaneously in another, in order to...
arbitrage pricing model noun: An asset pricing model using one or more common factors to price returns. With only one factor, representing the market portfolio, it is called a single...
arbitrage pricing theory noun: A theory of asset pricing serving as a framework for the arbitrage pricing model.
arbitrageable adjective: Capable of being arbitraged.
arbitrager noun: One who participates in arbitrage.
arbitrageur noun /ˈɑː(ɹ)bɪtɹɑˈʒɝ(ɹ)/: One who engages in arbitrage, such as a financial broker or an investment bank.
arbitrageuse noun: A female arbitrageur.
arbitragist noun: One who engages in arbitrage.
arbitral adjective /ˈɑːbɪtɹəl/: Relating to arbitration.
arbitrally adverb: By means of arbitration.
arbitrament noun /ɑːˈbɪtɹəmənt/: The judgement of an arbiter or arbitrator; an arbitration.
arbitrarily adverb: In an arbitrary manner.
arbitrariness noun: The quality or state of being arbitrary; the extent to which something is arbitrary.
arbitrarious adjective: Arbitrary; capricious.
arbitrariously adverb: In an arbitrarious manner.
arbitrariousness noun: The state or quality of being arbitrarious.
arbitrarity noun: Synonym of arbitrariness.
arbitrary adjective, noun /ˈɑː.bɪ.tɹə.ɹi/: Based on individual discretion or judgment; not based on any objective distinction, perhaps even made at random.
arbitrary and capricious adjective: Describes the act of committing a deed according to one's whim or caprice, therefore implying in the actor a tendency to abuse the possession of power.
arbitrary law noun: A legal decision or action that is based on personal discretion rather than established legal principles or facts.
arbitrary-precision arithmetic noun: Any calculation that is performed on numbers whose digits of precision are limited only by the available memory of the host system.
arbitrary unit noun: A relative unit of measurement to show the ratio of amount of substance, intensity, or other quantities, to a predetermined reference measurement.
arbitraryness noun: Alternative spelling of arbitrariness.
arbitratable adjective: Alternative form of arbitrable.
arbitrate verb /ˈɑːbɪtɹeɪt/: To make a judgment (on a dispute) as an arbitrator or arbiter
arbitrated adjective, verb: subject to arbitration
arbitration noun /ˌɑː.bɪˈtɹeɪ.ʃən/: The act or process of arbitrating.
arbitration of exchange noun: The determination of the exchange rate between currencies when there are one or more intermediate places through which the operations must pass.
arbitrational adjective: Of or pertaining to arbitration
arbitrationism noun: A policy of resolving disputes by arbitration.
arbitrationist noun: A proponent of arbitrationism.
arbitrative adjective: Of or relating to arbitration.
arbitratively adverb: By means of, or in terms of, arbitration.
arbitrator noun: A person to whom the authority to settle or judge a dispute is delegated.
arbitratorship noun: The role or status of an arbitrator.
arbitratrix noun: A female arbitrator.
arbitrement noun: Alternative spelling of arbitrament.
arbitrer noun: An arbitrator.
arbitress noun: A female arbiter.
arbitrix noun: A female arbiter, an arbitress.
arblast noun /ˈɑːblɑːst/: A wooden crossbow with a special drawing mechanism, used to fire bolts, stones, etc.
arblaster noun: Alternative form of arbalister.
Arbogast proper noun: A surname.
arbol noun: A small and potent kind of Mexican chili pepper.
Arboleda proper noun: A surname from Spanish.
arboloco noun: Any of various trees of the genus Montanoa.
Arbon proper noun: A historic town and a municipality, capital of Arbon district in Thurgau canton, Switzerland.
arbor noun /ˈɑːbə/: A shady sitting place or pergola usually in a park or garden, surrounded by climbing shrubs, vines or other vegetation.
arbor Dianae noun: A precipitation of silver in a striking arborescent form.
arbor knot noun: A type of knot used to secure fishing line to the arbor of a fishing reel.
arbor vine noun: Spanish arbor vine, a species of bindweed (Convolvulaceae), Merremia tuberosa.
arbor vitae noun: Alternative form of arborvitae.
arboraceous adjective: Of or relating to trees.
arboral adjective: arboreal; relating to trees
arborary adjective: Of or pertaining to trees; arboreal.
arborator noun: A person who plants, prunes and takes care of trees
arborcide noun: Alternative form of arboricide.
arboreal adjective, noun /ɑɹˈbɔɹi.əl/: Of, relating to, or resembling a tree.
arborealism noun: The condition of being arboreal
arborealist noun: Any arboreal organism.
arboreality noun: The quality of being arboreal, of living in trees
arboreally adverb: In an arboreal manner
arbored adjective: Furnished with an arbor; lined with trees.
arboreol noun: The epoxylignane derivative (7β,7'α,8α,8'α)-3,4:3',4'-bis(methylenedioxy)-7,9':7',9-diepoxylignane-7,8-diol
arboreomorph noun: A fossil of, or in the form of a tree
arboreous adjective /ɑɹˈbɚ.iəs/: Having the characteristics of a tree. (of a plant)
arboresce verb /ɑːbəˈrɛs/: To become a tree or tree-like, branching.
arborescence noun: A tree-like structure.
arborescent adjective /ɑːbəˈɹɛsənt/: Like a tree; having a structure or appearance similar to that of a tree; branching.
arborescently adverb: In an arborescent manner.
arboresque adjective: treelike
arboret noun: A small tree or shrub.
arboretum noun /ɑː(ɹ)bəˈɹiːtəm/: A place where many varieties of tree are grown for research, educational, and ornamental purposes.
arborglyph noun: A design or message carved into the trunk of a tree
arborical adjective: Relating to trees; arboreal.
arboricidal adjective: That kills (or cuts down) trees
arboricide noun: Any herbicide intended to kill trees or shrubs.
arboricity noun: The minimum number of forests into which the edges of an undirected graph may be partitioned.
arboricole adjective: arboreal
arboricoline adjective: Synonym of arboricolous.
arboricolous adjective: That grows on, or lives in, trees.
arboricultural adjective: Of or pertaining to the care, planting and maintenance of trees.
arboriculturally adverb: In terms of arboriculture.
arboriculture noun /ɑːɹˈbɔːɹ.ɪˌkʌl.t͡ʃɚ/: The branch of horticulture concerned with the planting, growth, and maintenance of trees.
arboriculturist noun: Synonym of arborist.
arboriferous adjective: Producing or having many trees.
arboriform adjective: Resembling a tree in shape or appearance.
arborinine noun: The acridine alkaloid 1-hydroxy-2,3-dimethoxy-10-methylacridin-9-one present in Erthela bahiensis
arborio noun /ɑːˈbɔːɹɪ.əʊ/: Alternative letter-case form of arborio.
arborio rice noun /ɑːˈbɔːɹɪ.əʊ ˈɹaɪs/: A northern Italian variety of short-grained starchy rice with a white dot at the center of each grain, commonly used in risotto.
arborisation noun: Non-Oxford British English standard spelling of arborization (“branching, tree-like formation”).
arborise verb: To develop a tree-like appearance.
arborist noun: One who practices arboriculture; a tree surgeon.
arborite noun: A heat-resistant laminate material used to veneer countertops.
arborization noun: Any branching, treelike shape or formation.
arborize verb: Alternative spelling of arborise.
arboroid adjective: Synonym of arborescent (“tree-like”).
arborol noun: Synonym of dendrimer.
arborolatry noun /ɑɹbɚˈɑlətɹi/: The worship of trees.
arborous adjective: Formed by trees; filled or covered with trees.
arborsculpture noun: The art and craft technique of growing and shaping tree trunks.
arborvirus noun: Alternative form of arbovirus.
arborvitae noun /ˌɑɹbɚˈvaɪti/: Any of several North American or Asian conifers, of the genera Thuja and Thujopsis or the species Platycladus orientalis, grown for timber or ornament.
arborway noun: An avenue (lined with trees).
arbour noun, verb: UK standard spelling of arbor.
'arboured adjective, verb: Alternative spelling of arbored
'arbourin' verb: Pronunciation spelling of harbouring.
arbourisation noun: Alternative form of arborization.
arbourization noun: Alternative form of arborization.
arbourous adjective: Rare spelling of arborous.
arboviral adjective: Of, pertaining to, or caused by an arbovirus.
arbovirologist noun: A virologist who specialises in the arboviruses
arbovirology noun: The study of arboviruses
arbovirosis noun: Any disease caused by an arbovirus.
arbovirus noun: Any virus that is transmitted by an arthropod.
Arbroath proper noun /aɹˈbɹoθ/: A coastal town and former royal burgh in Angus council area, Scotland (OS grid ref NO6441).
arbtrn noun: Abbreviation of arbitration.
Arbuckle proper noun: A surname from Scottish Gaelic.
Arbury proper noun: An area of Cambridge, England.
arbuscle noun /ˈɑːbʌs(ə)l/: A plant midway in height between a shrub and a tree; a dwarf tree.
arbuscocyte noun: An arbuscular (dendritic) cell
arbuscular adjective /ɑːˈbʌskjələ/: Similar to a small tree; shrublike.
arbusculated adjective: Having arbuscules
arbust noun: a bush, shrub
arbustive adjective /ɑː(ɹ)ˈbʌstɪv/: containing copses of trees or shrubs; covered with shrubs
arbutamine noun: A synthetic catecholamine used as a cardiac stimulant drug.
arbute noun: The strawberry tree.
arbutean adjective: Made from arbute, the wood of the strawberry tree.
Arbuthnot proper noun /ˈɑːɹ.bʌθ.nɒt/: A surname from Scottish Gaelic.
Arbuthnotian adjective: Of or pertaining to John Arbuthnot (1667?-1735), English physician and satirist.
Arbuthnott proper noun /ˈɑːɹ.bʌθ.nɒt/: A village in Kincardine and Mearns, Aberdeenshire council area, Scotland (OS grid ref NO7975).
arbutin noun: A glycoside of hydroquinone, found in bearberry, that is used to treat some diseases of the urinary tract
arbutinase noun: The enzyme beta-glucosidase.
arbutoid adjective: Characteristic of the Arbutus genus; applied to a kind of mycorrhiza where the fungal hyphae form sheaths around the root tips.
arbutus noun: A strawberry tree, any of the flowering plants in the genus Arbutus.
Arbuzov reaction noun: Synonym of Michaelis-Arbuzov reaction.
arc adjective, noun, prefix, verb /ɑːk/: That part of a circle which a heavenly body appears to pass through as it moves above and below the horizon.
arc blast noun: An explosion produced by the extreme heat of an uncontrolled high-energy electric arc.
arc boutant noun: Synonym of flying buttress.
arc-connected adjective: Such that every pair of points in the space comprises the boundary of some arc embedded in the space.
arc converter noun: A kind of spark transmitter in early wireless telegraphy, using an electric arc to convert direct current into radio-frequency alternating current.
arc cosecant noun: Alternative form of arccosecant.
arc cosine noun: Alternative form of arccosine.
arc cotangent noun: Alternative form of arccotangent.
arc elasticity noun: the point elasticity of one variable with respect to another between two given points
arc fault noun: An undesired and uncontrolled electric arc from one conductor through the air (or other gas) to a conductor at ground potential or a different voltage phase.
arc-fault circuit interrupter noun: A type of circuit breaker that detects signs of potentially-dangerous arcing on downstream wiring and shuts off power to the affected branch circuit to...
arc flash noun: The extremely intense light and heat produced by a high-energy electric arc.
arc-form pearly mussel noun: Epioblasma arcaeformis, an extinct species of freshwater mussel.
arc-hyperbolic function noun: An inverse hyperbolic function
arc lamp noun: An electric arc arranged so as to produce useful light.
arc length noun: The distance between two points on a curve.
arc light noun: A lamp that produces light by generating an electric arc across an enclosed gas.
arc minute noun: Alternative form of arcminute.
arc of history noun: The idea that history has a direction or purpose that “bends” (or can be bent) towards some goal.
arc-over noun: Alternative form of arcover.
arc resistance noun: The ability of an insulating material to withstand high voltage electric arc.
arc secant noun: Alternative form of arcsecant.
arc second noun: Alternative form of arcsecond.
arc spring noun: A spring (coil) in the shape of an arc.
arc transmitter noun: Synonym of arc converter.
arc up verb /ɑːk ap/: To become upset or angry.
arc weld verb /ˈɑɹkˌwɛld/: To weld using an arc created by electricity.
arc welder noun: One who arc welds.
arc welder's disease noun: siderosis
arc welding noun, verb: The process of welding two pieces of metal together using the heat generated by an electric arc.
Arca proper noun: A surname.
arcade noun, verb /ɑɹˈkeɪd/: A row of arches.
arcade adventure noun: A game combining the action elements of an arcade game with the narrative elements of an adventure game.
arcade game noun: A coin-operated video game or amusement device.
arcaded adjective, verb: Provided or furnished with arcades.
arcadeless adjective: Without an arcade.
arcadelike adjective: Resembling an arcade (row of arches).
arcader noun: One who plays arcade games.
arcadey adjective /ɑɹˈkeɪdi/: Characteristic of an arcade game, generally focused on action rather than strategy or realism.
arcadia noun /ɑɹˈkeɪ.di.ə/: An ideal region of rural and idyllic contentment; a pastoral utopia.
arcadian adjective, noun /ɑɹˈkeɪdɪən/: Pertaining to an arcade.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0): each word's first meaning. A word with a page of its own links to it; for the rest, this line is PlainSpell's entry. Total under A: 47,274 words, in 158 parts.