17-letter words containing a, b, n
- backward analysis — (theory) An analysis to determine properties of the inputs of a program from properties or context of the outputs. E.g. if the output of this function is needed then this argument is needed. Compare forward analysis.
- backward chaining — (algorithm) An algorithm for proving a goal by recursively breaking it down into sub-goals and trying to prove these until facts are reached. Facts are goals with no sub-goals which are therefore always true. Backward training is the program execution mechanism used by most logic programming language like Prolog. Opposite: forward chaining.
- 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
- baden-wurttemberg — a state of SW Germany. Capital: Stuttgart. Pop: 53 938 (2003 est). Area: 35 742 sq km (13 800 sq miles)
- baggage screening — the procedure whereby baggage is electronically screened at an airport before it is allowed on the plane
- bahia de cochinos — Spanish name of Bay of Pigs.
- balance of nature — the stable state in which natural communities of animals and plants exist, maintained by adaptation, competition, and other interactions between members of the communit ies and their nonliving environment
- balance of terror — military deterrence based on the possession of weapons of mass destruction by opponents in a conflict
- balance the books — do accounting
- balanced literacy — a method of teaching reading in which phonics and whole language approaches are both used to maximize student learning.
- balanced sentence — a sentence consisting of two or more clauses that are parallel in structure.
- bald-faced hornet — any large, stinging paper wasp of the family Vespidae, as Vespa crabro (giant hornet) introduced into the U.S. from Europe, or Vespula maculata (bald-faced hornet or white-faced hornet) of North America.
- banana phenomenon — banana problem
- bangalore torpedo — an explosive device in a long metal tube, used to blow gaps in barbed-wire barriers
- banking principle — the principle that bank notes are a form of credit and should be issued freely in order to maintain an elastic currency.
- bankruptcy estate — all of the interests that a debtor has at the start of a bankruptcy case
- barbed wire fence — a fence constructed from strong wire that has sharply pointed barbs at close intervals along its length
- barkhausen effect — the phenomenon of short, sudden changes in the magnetism of a ferromagnetic substance occurring when the intensity of the magnetizing field is continuously altered.
- barrel distortion — distortion of an image produced by an optical system that causes straight lines at image margins to bulge outwards
- barren strawberry — a Eurasian plant, Potentilla sterilis, related to the strawberry that does not produce edible fruit
- 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
- basal anaesthesia — preliminary and incomplete anaesthesia induced to prepare a surgical patient for total anaesthesia with another agent
- base lending rate — a minimum interest rate on which financial institutions base the rates they use for lending
- baseboard heating — a heating system by pipes, through which steam or hot water circulates, near the base of the walls of rooms
- basement membrane — a thin, extracellular membrane underlying epithelial tissue.
- basic proposition — protocol (def 6).
- bathroom fittings — plumbing fixtures or accessories suitable for use in a bathroom
- battle of britain — (in World War II) the series of aerial combats that took place between British and German aircraft during the autumn of 1940 and that included the severe bombardment of British cities.
- be black and blue — If you say that someone is black and blue, you mean that they are badly bruised.
- 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.
- be running scared — If you say that a person or group is running scared, you mean that they are frightened of what someone might do to them or what might happen.
- be your own woman — If you say that a woman is her own woman, you approve of the fact that she makes her plans and decisions herself, and does not depend on other people.
- 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
- beat to the punch — to be quicker than (another) in doing something, as in striking a blow
- bed and breakfast — Bed and breakfast is a system of accommodation in a hotel or guest house, in which you pay for a room for the night and for breakfast the following morning. The abbreviation B&B is also used.
- bed-and-breakfast — an accommodation offered by an inn, hotel, or especially a private home, consisting of a room for the night and breakfast the next morning for one inclusive price.
- beefsteak begonia — an ornamental plant, Begonia erythrophylla, having light-pink flowers and nearly round, thick, fleshy leaves that are red on the underside.
- beer and skittles — enjoyment or pleasure
- behind one's back — without one's knowledge; secretly or deceitfully
- bell-hanger's bit — a bit for drilling small holes through studs or the like.
- benjamin banneker — Benjamin, 1731–1806, U.S. mathematician, natural historian, and astronomer.
- benjamin franklin — Aretha [uh-ree-thuh] /əˈri θə/ (Show IPA), born 1942, U.S. singer.
- 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.
- benoit mandelbrot — (person) /ben'wa man'dl-bro/ Benoit B. Mandelbrot. The IBM scientist who wrote several original books on fractals and gave his name to the set he was discovered, the Mandelbrot set and coined the term "fractal" in 1975 from the Latin fractus or "to break".
- bent out of shape — very angry, upset, or agitated
- benzeneazobenzene — azobenzene.
- beyond comparison — outstanding, without equal