12-letter words containing a, u, t, o, s
- arousability — to stimulate sexually.
- articulators — Plural form of articulator.
- arts council — an organization that provides funding for a variety of arts activities
- ascomycetous — belonging or pertaining to the Ascomycota.
- assault boat — a portable boat used for landing troops on beaches and for crossing rivers.
- assentaneous — having a tendency to agree, comply or acquiesce
- assimulation — Obsolete form of assimilation.
- assuefaction — the condition of being or becoming familiar with or used to something
- astoundingly — capable of overwhelming with amazement; stunningly surprising.
- astronautics — the science and technology of space flight
- astrotourist — a person who pays to travel into space as a form of recreation
- 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
- at all hours — If you say that something happens at all hours of the day or night, you disapprove of it happening at the time that it does or as often as it does.
- atheromatous — a sebaceous cyst.
- athos, mount — autonomous monastic district occupying the tip of the easternmost prong of the Chalcidice peninsula, NE Greece: 130 sq mi (337 sq km); pop. 1,500
- atmospherium — an optical system used to simulate images of atmospheric phenomena, as cloud formations, storms, and day and night, on the inside of a dome.
- attitudinous — (informal) Having a bold and possibly unfriendly attitude; sassy.
- attributions — Plural form of attribution.
- auction sale — an instance of items being sold by auction
- auction site — a commercial website on which items are sold by internet auction
- audio system — integrated equipment for producing amplified sound, as in a hi-fi or a mobile disco, or as a public-address system on stage
- audiologists — Plural form of audiologist.
- auscultation — the diagnostic technique in medicine of listening to the various internal sounds made by the body, usually with the aid of a stethoscope
- australopith — (archaeology, anthropology, paleonotology) Of or pertaining to the extinct hominid primates, of the genus Australopithecus, from the Pleistocene period.
- austronesian — of or relating to Austronesia, its peoples, or their languages
- auto-erotism — the arousal and satisfaction of sexual excitement within or by oneself, as by masturbation.
- autoanalysis — Psychoanalysis. self-analysis.
- autocatalyse — to cause an internal, self-produced, chemical reaction
- autochangers — Plural form of autochanger.
- autochthones — Alternative spelling of autochthons.
- autodestruct — likely to or possessing the power to destroy or obliterate itself or its possessor
- autodiallers — Plural form of autodialler.
- autoeciously — in an autoecious manner
- autoexposure — A device that sets the exposure automatically on a camera or other piece of equipment.
- autogenously — In an autogenous manner; spontaneously.
- autohypnosis — the process or result of self-induced hypnosis
- automobilism — the use of automobiles, or the practices associated with them
- automobilist — Driver; person who uses a motor vehicle such as car, van or truck.
- automorphism — the practice of seeing others as having the same characteristics as oneself
- autonomously — Government. self-governing; independent; subject to its own laws only. pertaining to an autonomy, or a self-governing community.
- autorickshaw — (in India) a light three-wheeled vehicle driven by a motorcycle engine
- autotheistic — Self-worshiping; prideful in the extreme.
- backsolution — The process or result of backsolving.
- barbados nut — an ornamental, tropical American tree, Jatropha curcas, of the spurge family, having ivylike leaves, small, yellow or greenish-yellow flowers, and olive-shaped fruit yielding a purgative, poisonous oil.
- bardolatrous — relating to or characterized by bardolatry
- barquisimeto — a city in NW Venezuela. Pop: 1 009 000 (2005 est)
- barratrously — In a barratrous manner.
- basset hound — A basset hound is a dog with short strong legs, a long body, and long ears. It is kept as a pet or used for hunting.
- bastel house — (on the Anglo-Scottish border) a partly fortified house, usually with a vaulted ground floor.
- bathophilous — (of an organism) living in very deep water