17-letter words containing o, a
- bighorn mountains — range of the Rocky Mountains in N Wyo. and S Mont.: highest peak, 13,165 ft (4,013 m)
- bill of adventure — a certificate made out by a merchant to show that goods handled by him and his agents are the property of another party at whose risk the dealing is done
- bill of attainder — (formerly) a legislative act finding a person guilty without trial of treason or felony and declaring him attainted
- 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
- binocular rivalry — the phenomenon whereby one is unable to see simultaneously different images presented one to each eye; usually in some areas of the eye the image presented to the left eye is seen, in others that presented to the right eye
- biological father — the man whose semen fertilized the ovum from which a child was born
- biological marker — a substance, physiological characteristic, gene, etc that indicates, or may indicate, the presence of disease, a physiological abnormality or a psychological condition
- biological mother — the mother who gave birth to a child
- biological parent — a parent who has conceived (biological mother) or sired (biological father) rather than adopted a child and whose genes are therefore transmitted to the child.
- biological rhythm — biorhythm.
- biological shield — a protective shield impervious to radiation, esp the thick concrete wall surrounding the core of a nuclear reactor
- biological weapon — a weapon which uses a biological agent to harm people and other living organisms
- biopharmaceutical — of or relating to drugs produced using biotechnology
- biotransformation — the metabolizing of some substance, esp. a drug, in the body
- birth of a nation — an American film (1915), directed by D. W. Griffith.
- bitter almond oil — almond oil (def 2).
- bitter-almond-oil — Also called sweet almond oil, expressed almond oil. a colorless to pale yellow fatty oil expressed from the seeds of the sweet almond, used in preparing perfumes and confections.
- bjarne stroustrup — (person) The father of C++ and author of the C++ bible.
- black forest cake — a torte consisting typically of thin layers of chocolate cake spread with alternating layers of chocolate, cherry, and whipped-cream filling and covered with whipped cream
- black nationalism — a movement advocating the establishment of a separate black nation within the U.S.
- black swallowtail — the tail of a swallow or a deeply forked tail like that of a swallow.
- black swallowwort — celandine (def 1).
- black-box testing — functional testing
- blackboard jungle — a school or school system characterized by lack of discipline and by juvenile delinquency.
- blackout curtains — thick, lined curtains designed to shut out all daylight and keep a room in complete darkness
- blackpoll warbler — a North American warbler, Dendroica striata, the adult male of which has the top of the head black.
- bland-allison act — an act of Congress (1878) requiring the federal government to purchase at the market price from two to four million dollars' worth of silver monthly for conversion into silver dollars containing 16 times more silver per coin than gold in dollar coins of gold.
- blank endorsement — an endorsement on a bill of exchange, cheque, etc, naming no payee and thus making the endorsed sum payable to the bearer
- blasphemous libel — In Britain, previously, the crime committed if a person insults, offends, or vilifies the deity, Christ, or the Christian religion
- blind carbon copy — a duplicate of anything written or typed, or a copy of an email or other electronic document, that is sent to someone whose name is not visible to the primary addressee. Abbreviation: bcc.
- block association — an association for the residents of a particular block in a neighbourhood to discuss and act on matters of common concern
- blocking antibody — Immunology. an antibody that partly combines with an antigen and interferes with cell-mediated immunity, thereby preventing an allergic reaction.
- blood and thunder — A blood and thunder performer or performance is very loud and emotional.
- blood transfusion — A blood transfusion is a process in which blood is injected into the body of a person who is badly injured or ill.
- blood-and-thunder — sensationalism, violence, or exaggerated melodrama: a movie full of blood and thunder.
- blow hot and cold — to vacillate
- blow someone away — to kill by shooting
- blowpipe analysis — a type of chemical analysis in which the intensely hot flame of a blowpipe vaporizes a mineral or other substance with a characteristically colored flame and a unique odor, so as to identify chemical elements in a substance
- blue dog democrat — a fiscally conservative member of the Democratic Party
- blue false indigo — a North American plant, Baptisia australis, of the legume family, having wedge-shaped leaflets and blue, clustered flowers.
- blue sky software — eHelp Corporation
- blue-headed vireo — solitary vireo.
- bluegrass country — region in central Ky. where there is much bluegrass
- board and lodging — If you are provided with board and lodging, you are provided with food and a place to sleep, especially as part of the conditions of a job.
- board of estimate — a special organ of a municipal government, as of New York City, composed of the mayor, the president of the city council, and the controller, and charged with approving the city's budget and fiscal matters.
- board of managers — a group of people responsible for managing an organization
- board of trustees — a governing board which directs the policies of an educational institution
- board-and-shingle — a small dwelling with wooden walls and a shingle roof
- boat-billed heron — a nocturnal, tropical American wading bird (Cochlearius cochlearius) with a large, broad bill: it is the only member of a family (Cochleariidae) of wading birds