17-letter words containing o, n, s, a
- at someone's hand — from
- at swords' points — ready to quarrel or fight
- at the expense of — If you achieve something at the expense of someone, you do it in a way which might cause them some harm or disadvantage.
- attention-seeking — intended to make people take notice
- attorneys-in-fact — a person authorized by power of attorney to act on the authorizer's behalf outside a court of law.
- attraction sphere — centrosphere (sense 1)
- audio description — a facility provided for visually impaired people in which a film, television programme, or play is described through audio technology
- audubon's warbler — a common North American wood warbler, Dendroica coronata, having yellow spots on the rump, crown, and sides, including a white-throated eastern subspecies (myrtle warbler) and a yellow-throated western subspecies (Audubon's warbler)
- australian ballot — an official ballot listing candidates for election to public office and issues, levies, etc., distributed inside the polling place to be marked by the voter in secret: it originated in Australia and is widely used in the U.S.
- australopithecine — any of various extinct apelike primates of the genus Australopithecus and related genera, remains of which have been discovered in southern and E Africa. Some species are estimated to be over 4.5 million years old
- authoritativeness — having due authority; having the sanction or weight of authority: an authoritative opinion.
- automated testing — (testing) Software testing assisted with software tools that require no operator input, analysis, or evaluation.
- autonomous syntax — an approach of generative grammar in which the syntactic component of a grammar is viewed as existing or operating independently of the semantic component and abstract syntactic representation is not equivalent to semantic representation.
- autonomous system — (networking, routing) (AS) A collection of routers under a single administrative authority, using a common Interior Gateway Protocol for routing packets.
- autosensitization — autoimmunization.
- aviation industry — a collective term for the companies involved in air transport
- avogadro constant — the number of atoms or molecules in a mole of a substance
- avogadro's number — the constant, 6.022 × 10 23 , representing the number of atoms, molecules, or ions in one mole of a substance. Symbol: N. Compare gram-atom, gram molecule.
- avoirdupois pound — a pound weighing 16 ounces
- axis of ordinates — y-axis (def 1).
- axis-of-ordinates — y-axis (def 1).
- babe in the woods — a baby or child.
- babi yar symphony — a symphony (1962) by Dimitri Dimitrievich Shostakovich.
- bachelor's button — any of several plants of a genus (Centaurea) of the composite family, that have scaly, vase-shaped bracts below the white, pink, or blue flowers; esp., the cornflower and knapweed
- bachelor's-button — any of various plants with round flower heads, especially the cornflower.
- back on the rails — If something is back on the rails, it is beginning to be successful again after a period when it almost failed.
- bacon's rebellion — an unsuccessful uprising by frontiersmen in Virginia in 1676, led by Nathaniel Bacon against the colonial government in Jamestown.
- bacteriorhodopsin — a purple protein containing retinal and found in the plasma membrane of certain bacteria (genus Halobacterium): it directly supplies electrochemical energy from sunlight
- bahia de cochinos — Spanish name of Bay of Pigs.
- balance the books — do accounting
- barrel distortion — distortion of an image produced by an optical system that causes straight lines at image margins to bulge outwards
- barrow-in-furness — an industrial town in NW England, in S Cumbria. Pop: 47 194 (2001)
- bartholin's gland — either of two small glands near the vaginal opening: during sexual excitement they secrete a mucous lubricating substance
- baseboard heating — a heating system by pipes, through which steam or hot water circulates, near the base of the walls of rooms
- basic proposition — protocol (def 6).
- bathroom fittings — plumbing fixtures or accessories suitable for use in a bathroom
- be off one's head — If you say that someone is off their head, you mean that they have taken so many drugs that they do not know what they are doing.
- beat one's brains — to try hard to remember, understand, or solve something
- beat one's breast — to display guilt and remorse publicly or ostentatiously
- beefsteak begonia — an ornamental plant, Begonia erythrophylla, having light-pink flowers and nearly round, thick, fleshy leaves that are red on the underside.
- behind one's back — without one's knowledge; secretly or deceitfully
- benjamin-constant — Henri Benjamin [ahn-ree ban-zha-man] /ɑ̃ˈri bɛ̃ ʒaˈmɛ̃/ (Show IPA), (Benjamin Constant) 1767–1830, French statesman and author, born in Switzerland.
- bent out of shape — very angry, upset, or agitated
- beyond comparison — outstanding, without equal
- bighorn mountains — range of the Rocky Mountains in N Wyo. and S Mont.: highest peak, 13,165 ft (4,013 m)
- binary opposition — a relation between the members of a pair of linguistic items, as a pair of distinctive features, such that one is the absence of the other, as voicelessness and voice, or that one is at the opposite pole from the other, as stridency and mellowness.
- binet-simon scale — a test comprising questions and tasks, used to determine the mental age of subjects, usually children
- biotransformation — the metabolizing of some substance, esp. a drug, in the body
- bjarne stroustrup — (person) The father of C++ and author of the C++ bible.
- black nationalism — a movement advocating the establishment of a separate black nation within the U.S.