12-letter words containing a, r, o, n, i
- antithrombin — a substance that counteracts the action of thrombin, preventing the formation of blood clots
- antitumoural — acting against or upon tumours
- anton sailer — Anton [ahn-tohn] /ˈɑn toʊn/ (Show IPA), ("Toni") 1935–2009, Austrian skier.
- apparitional — of or relating to an apparition or apparitions; ghostly, spectral
- apperception — the attainment of full awareness of a sensation or idea
- apportioning — Present participle of apportion.
- appreciation — Appreciation of something is the recognition and enjoyment of its good qualities.
- apprehension — Apprehension is a feeling of fear that something bad may happen.
- approbations — approval; commendation.
- apron string — a string for tying an apron on
- arbitrations — Plural form of arbitration.
- arborization — a branching treelike appearance in certain fossils and minerals
- archaization — Process of becoming or turning something more archaic.
- archdiocesan — Relating to an archdiocese.
- archegoniate — having archegonia
- archibenthos — the ocean bottom between the littoral and abyssal zones: from depths of approximately 200 feet (60 meters) to 3300 feet (1000 meters).
- archilochian — denoting or relating to the 7th century bc Greek poet Archilochus or his verse, esp the iambic trimeters or trochaic tetrameters used by him
- archiphoneme — an abstract linguistic unit representing two or more phonemes when the distinction between these has been neutralized: conventionally shown by a capital letter within slashes, as /T/ for /t/ and /d/ in German Rat and Rad
- archosaurian — belonging to or characteristic of the archosaurs
- arctic ocean — the ocean surrounding the North Pole, north of the Arctic Circle. Area: about 14 100 000 sq km (5 440 000 sq miles)
- area bombing — aerial bombing in which bombs are dropped over the general area of a target.
- arfvedsonite — a type of hornblende with the composition Na3(Fe,Mg)4FeSi8O22(OH)2
- ariel sharon — Ariel, 1928–2014, Israeli military and political leader; prime minister 2001–06.
- aristophanes — ?448–?380 bc, Greek comic dramatist, who satirized leading contemporary figures such as Socrates and Euripides. Eleven of his plays are extant, including The Clouds, The Frogs, The Birds, and Lysistrata
- aristophanic — 448?–385? b.c, Athenian comic dramatist.
- aristotelian — of or relating to Aristotle or his philosophy
- arithmomania — an obsessive desire to count objects, or a fixation with numbers and calculations
- arpeggiation — the writing, playing or singing of arpeggios
- arseniferous — Lb geology Containing or producing arsenic.
- arsenopyrite — a white or grey metallic mineral consisting of a sulphide of iron and arsenic that forms monoclinic crystals with an orthorhombic shape: an ore of arsenic. Formula: FeAsS
- arsino group — the univalent group H 2 As−.
- articulation — Articulation is the action of producing a sound or word clearly, in speech or music.
- arts council — an organization that provides funding for a variety of arts activities
- aspirational — If you describe someone as aspirational, you mean that they have strong hopes of moving to a higher social status.
- assassinator — a person who assassinates
- assertations — Plural form of assertation.
- asseveration — the act of asseverating.
- astrodynamic — Pertaining to astrodynamics.
- astronautics — the science and technology of space flight
- astronomical — If you describe an amount, especially the cost of something as astronomical, you are emphasizing that it is very large indeed.
- astroturfing — a PR tactic used in politics and advertising in which actors are paid to display overt and apparently spontaneous grassroots support for a particular product, policy, or event
- asynchronies — a lack of synchronism or coincidence in time.
- asynchronism — a lack of synchronism; occurrence at different times
- atorvastatin — a statin, (C 33 H 34 FN 2 O 5) 2 ·Ca 3 H 2 O, used in the prevention and treatment of heart disease.
- attorneyship — The office or profession of an attorney.
- attributions — Plural form of attribution.
- au contraire — on the contrary
- auction room — a room in a building where auctions take place
- auctioneered — Simple past tense and past participle of auctioneer.
- austronesian — of or relating to Austronesia, its peoples, or their languages