Word origins

• appressTo press close to.
• appropinquateTo approach; to near.
• appropinquationThe act of drawing near; an approach.
• appulseAn energetic movement towards or against something; a push, a strike.
• appulsionA driving or striking against; an appulse.
• apricateTo bask in the sun.
• apriciousSunny; warmed by or basking in the sun.
• aprimorateTo raise (something) to a better state; to elevate, to improve, to refine.
• aptitudinalRelating to aptitude.
• aqua mirabilisA drink prepared from cloves, nutmeg, ginger, and spirit of wine.
• aquaphiliaA sexual attraction to general imagery of people in water, sexual acts in water, or watery environments.
• aquatileInhabiting the water.
• aquatoneAn offset printing method using a gelatin-coated zinc plate to print type, line illustrations, and fine-screen halftones.
• aquicludeA solid, impermeable area underlying or overlying an aquifer.
• aquitardA semipermeable layer along an aquifer.
• aquosewatery; aqueous
• ar-Forming classification names for classes of organic compounds that contain a carbon skeleton and one or more aromatic rings.
• arachibutyrophobiaFear of peanut butter sticking to the roof of one's mouth.
• arachidicOf or pertaining to arachidic acid or its derivatives.
• araneousExtremely thin and delicate, like a cobweb.
• arboraryOf or pertaining to trees; arboreal.
• arboreousHaving the characteristics of a tree. (of a plant)
• arboresceTo become a tree or tree-like, branching.
• arboricityThe minimum number of forests into which the edges of an undirected graph may be partitioned.
• arboriformResembling a tree in shape or appearance.
• arborolSynonym of dendrimer.
• arborolatryThe worship of trees.
• arbuscleA plant midway in height between a shrub and a tree; a dwarf tree.
• arbustivecontaining copses of trees or shrubs; covered with shrubs
• arc-Used to form the names of inverse trigonometric functions, and the symbols for these functions.
• archidiaconalPertaining to an archdeacon.
• ArchilochianOf or pertaining to the Ancient Greek satirical poet Archilochus and his style.
• arciformHaving the form of a bow (weapon)
• arcographAn instrument for drawing a circular arc without using a central point.
• arcosoliumA tomb in an arched recess in a wall.
• arctationStenosis.
• arcuationThe act of bending or curving; the state of being bent; crookedness.
• arcubalisterA crossbowman; one who used the arcubalist.
• arculusA crossvein between the radius and cubitus near the base of the wing in certain insects
• arefactionThe fact or process of drying; desiccation.
• arefyTo dry, or make dry; wither.
• arenarioussandy
• arenationA form of therapeutic bathing in hot sand.
• arenicoliteA wormhole or other burrowing tunnel preserved in sandstone or another rock.
• arenicolousLiving or burrowing in sand.
• areniformof or resembling sand
• areniliticOf or pertaining to sandstone.
• areniteAny sedimentary rock with a grain size in the sand range on the Wentworth scale.
• arenosesandy, gritty, full of sand.
• arenulousContaining or resembling sand.
• areoletA small space on the wings of insects, circumscribed by the radii.
• AreopagiticsCollectively, the mystical theological works attributed to Pseudo-Dionysius the Areopagite.
• argalthus, therefore
• argalaThe greater adjutant, a stork native to Africa, India, and Southeast Asia.
• argentaliumAn alloy of aluminium and silver.
• argentamineA solution of silver phosphate in an aqueous solution of ethylene diamine, used as an antiseptic astringent and as a disinfectant.
• argentatesilvery white
• argillicOf or pertaining to clay or clay minerals.
• argilliferousProducing clay; rich in argil.
• argilliturbationA mixing process in clay rich soils subjected to cycles of wet and dry, whereby the soil expands when wet and contracts as it dries, causing soil, stones and artefacts to move up and down.
• argillousclayey; argillaceous
• argonauticOf or pertaining to the Argonauts.
• argumentableAdmitting of argument; arguable.
• argumentum ad dictionariumAn argument citing a dictionary definition as the proper and correct usage, and claiming that an excluded usage must be incorrect.
• argutationnitpicking; arguing about trivialities
• arguteSharp; perceptive; shrewd.
• arietationThe use of a battering ram, or similar.
• ArietianSynonym of Arian, of or related to Aries, its nature, or its influence.
• arietiformHaving the shape of a ram's head or of the astrological symbol of Aries, ⟨♈︎⟩.
• arietineOf, like, or pertaining to rams.
• ariolaterone who practices the art of divination and uses interpretation to produce omens.
• ariolationSoothsaying; prophecy.
• AristarchA severe critic.
• aristateHaving a long bristle at its apex.
• aristiformHaving the bristlelike shape or fibrillar structure of aristae.
• AristophaneanOf or pertaining to Aristophanes, his plays or his poetry.
• AristophanicAristophanean
• armamentaryAn armory or arsenal (place to store weapons)
• armiferousBearing arms (weapons).
• armipotencePower in arms; military might.
• armipotentPowerful in battle.
• armisonantResounding with arms, or weapons.
• armomancyDivination using the shoulder blade of an animal. It was taken from a dead animal and thrown into a fire, and the cracks formed in the bone were then interpreted.
• ArpitanFranco-Provençal.
• arrectTo direct.
• arreptionThe act of taking away; removal
• ArretineOf, from or pertaining to Arezzo, Italy.
• arrideTo please; to gratify.
• arrogancyArrogance.
• arrosionThe wasting away of a vessel wall under pressure.
• arteri-arterial (and)
• arteriotomyThe opening of an artery, especially for bloodletting.
• artificiousUsing, exhibiting, performed with or characterized by artfulness or skill
• arundineousAbounding in reeds; reedy.
• arvicolefield mouse (US, Canada), vole
• arvicolineThat inhabits meadows; rural
• arviculturearable farming
• as-Away from.
• AscalaphusThe orchardist of Hades, changed into a screech-owl by Demeter for telling Hades that Persephone had eaten pomegranate seeds
• AscaniusA legendary king of Alba Longa, and the son of the Trojan hero Aeneas.