17-letter words containing r, a, b
- 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.
- bacteriologically — In a bacteriological manner; with respect to bacteriology.
- 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 checkroom — a left luggage office; a place at, for example, a railway station where baggage can be left
- baggage screening — the procedure whereby baggage is electronically screened at an airport before it is allowed on the plane
- 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
- balanced literacy — a method of teaching reading in which phonics and whole language approaches are both used to maximize student learning.
- 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.
- baltimore clipper — a small, fast American sailing vessel of the early 19th century, having a sharp hull form and two masts with a pronounced rake and carrying a brig or schooner rig.
- 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
- bar-tailed godwit — a large wader, Limosa lapponica, of the family Scolopacidae which, in migrating from Alaska to New Zealand, makes the longest journey without stopping for food taken by any animal
- barbed wire fence — a fence constructed from strong wire that has sharply pointed barbs at close intervals along its length
- barbed-wire grass — an aromatic grass, Cymbopogon refractus, with groups of seed heads resembling barbed wire
- barber of seville — Italian Il barbiere di Siviglia. a comic opera (1816) by Gioacchino Rossini based on a comedy (1775) by Beaumarchais.
- barchester towers — a novel (1857) by Anthony Trollope.
- bari delle puglie — Italian name of Bari.
- 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.
- barmecide (feast) — a pretended feast with no food
- barred woodpecker — a climbing bird, Picoides minor, of the family Picidae
- 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
- base lending rate — a minimum interest rate on which financial institutions base the rates they use for lending
- base rate fallacy — the tendency, when making judgments of the probability with which an event will occur, to ignore the base rate and to concentrate on other information
- 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).
- basic service set — (networking) (BSS) A wireless local area network and all the wireless devices (e.g. PCs and laptops) that are associated with it. A BSS may or may not include an access point and is identified by a BSSID.
- basketball player — someone who plays basketball
- 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.
- battle-ax culture — a late Neolithic to Copper Age culture of northern Europe marked especially by the production of pottery bearing the imprint of cord and by the use of battle-axes as burial accouterments.
- be a box of birds — to be very well indeed
- be over sb's head — If something such as an idea, joke, or comment goes over someone's head, it is too difficult for them to understand.
- 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.
- beardmore glacier — one of the largest glaciers, in central Antarctica. About 125 miles (200 km) long.
- beat a dead horse — to argue an issue that is already settled
- 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 the drum for — to attempt to arouse interest in
- 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.