9-letter words containing a, s, o
- aragonese — a native or inhabitant of Aragon
- arboreous — thickly wooded; having many trees
- arborists — Plural form of arborist.
- arbovirus — any one of a group of viruses that cause such diseases as encephalitis and dengue and are transmitted to humans by arthropods, esp insects and ticks
- arccosine — the function the value of which for a given argument between –1 and 1 is the angle in radians (between 0 and π), the cosine of which is that argument: the inverse of the cosine function
- archosaur — any of a group of reptiles consisting of dinosaurs, pterosaurs, modern birds, modern crocodiles and extinct relatives of crocodiles, all having a diapsid skull
- archstone — a wedge-shaped stone forming the curved part of an arch
- arcsecond — unit used in astronomy
- arduously — requiring great exertion; laborious; difficult: an arduous undertaking.
- areopagus — the hill to the northwest of the Acropolis in Athens
- areostyle — (of columned buildings) having a wide intercolumniation equal to four or more diameters of one of the columns
- argentous — of or containing silver in the monovalent state
- argonauts — Classical Mythology. a member of the band of men who sailed to Colchis with Jason in the ship Argo in search of the Golden Fleece.
- aristotle — a bottle
- armorless — any covering worn as a defense against weapons.
- armourers — Plural form of armourer.
- armouries — a drill hall used for training and as headquarters by a reserve unit of the armed forces
- armstrong — Edwin Howard. 1890–1954, US electrical engineer; invented the superheterodyne radio receiver and the FM radio
- armyworms — Plural form of armyworm.
- arnoldson — Klas Pontus [klahs pawn-tuh s] /klɑs ˈpɔn təs/ (Show IPA), 1844–1916, Swedish author and politician: Nobel Peace Prize 1908.
- aromatase — an enzyme that converts testosterone into an oestrogen
- aromatics — Plural form of aromatic.
- aromatise — Alternative spelling of aromatize.
- aroostook — river in N Me., flowing into the St. John River in New Brunswick, Canada: c. 140 mi (225 km)
- arousable — able to be aroused
- arpeggios — Plural form of arpeggio.
- arrestors — Plural form of arrestor.
- arrogates — Third-person singular simple present indicative form of arrogate.
- arrowless — having no arrows
- arseholed — very drunk
- arsenious — of or containing arsenic in the trivalent state
- arsonists — Plural form of arsonist.
- art house — a motion-picture theater specializing in the exhibition of art films.
- art-house — An art-house film is a film that is intended to be a serious artistic work rather than a piece of popular entertainment.
- artemovsk — a city in E Ukraine.
- arthroses — Plural form of arthrosis.
- arthrosis — a bone joint which enables movement
- aryballos — a small narrow-necked vessel or bottle shaped like a sphere, used in ancient Greece to store oil or perfume
- as though — You use as if and as though when you are giving a possible explanation for something or saying that something appears to be the case when it is not.
- asbestoid — Mineralogy. a fibrous mineral, either amphibole or chrysotile, formerly used for making incombustible or fireproof articles.
- asbestous — having the look, structure or qualities of asbestos
- asbomania — the perceived indiscriminate and excessive use by the authorities of anti-social behaviour orders in dealing with people causing a nuisance to their fellow citizens
- ascension — In some religions, when someone goes to heaven, you can refer to their ascension to heaven.
- ascocarps — Plural form of ascocarp.
- ascogonia — Plural form of ascogonium.
- ascorbate — a salt of ascorbic acid
- ascospore — one of the spores (usually eight in number) that are produced in an ascus
- asepalous — (of a plant or flower) having no sepals
- ash blond — a very light blond colour
- ash color — ash gray.