15-letter words containing a, b, e, r
- beside the mark — not striking the point aimed at
- beta conversion — (theory) A term from lambda-calculus for beta reduction or beta abstraction.
- beta-adrenergic — pertaining to or involving beta receptors
- bias (ply) tire — a motor vehicle tire having a foundation of plies of rubberized cords in a crisscross pattern of lines diagonal to the center line of the tread
- biblia pauperum — any of the picture books illustrating Biblical events and usually containing a short text, used chiefly in the Middle Ages for purposes of religious instruction.
- biblical hebrew — the Hebrew language used in the Old Testament. Abbreviation: BiblHeb.
- bidirectionally — in a bidirectional manner
- big bang theory — In astronomy the big bang theory is a theory that suggests that the universe was created as a result of an extremely large explosion.
- big black river — a river in N central Mississippi, flowing SW to the Mississippi River near Vicksburg. 330 miles (531 km) long.
- big sandy creek — a river in central Colorado, flowing NE and SE to the Arkansas River near Lamar: site of the 1864 Sand Creek Massacre. 200 miles (322 km) long.
- bilateral trade — a system of trading between two countries in which each country attempts to balance its trade with that of the other
- binomial series — an infinite series obtained by expanding a binomial raised to a power that is not a positive integer.
- bipartite graph — complete graph
- birch partridge — ruffed grouse
- bird of passage — If you refer to someone as a bird of passage, you mean that they are staying in a place for a short time before going to another place.
- black horehound — a hairy unpleasant-smelling chiefly Mediterranean plant, Ballota nigra, having clusters of purple flowers: family Lamiaceae (labiates)
- black marketeer — A black marketeer is someone who sells goods on the black market.
- black operation — a covert and undocumented military operation
- black raspberry — a plant, Rubus occidentalis, of E North America, that has black berry-like fruits
- black sea bream — a sparid fish, Spondyliosoma cantharus, found in N Europe and the Mediterranean
- black september — a Palestinian Terrorist group, responsible for the assassinations of Israeli athletes at the Olympic Games at Munich in 1972
- black snakeroot — a tall bugbane, Cimicifuga racemosa, of the buttercup family, of eastern North America, having thin, tapering, toothed or deeply cut leaflets and branched clusters of small, white flowers.
- black-marketeer — to sell articles in the black market.
- blackberry bush — a bush on which blackberries grow
- blackberry lily — an ornamental Chinese iridaceous plant, Belamcanda chinensis, that has red-spotted orange flowers and clusters of black seeds that resemble blackberries
- bladder campion — a European caryophyllaceous plant, Silene vulgaris, having white flowers with an inflated calyx
- blank cartridge — a cartridge containing powder but no bullet: used in battle practice or as a signal
- blasting powder — a form of gunpowder made with sodium nitrate instead of saltpeter, used chiefly for blasting rock, ore, etc.
- blenheim orange — a type of apple tree bearing gold-coloured apples
- blockade runner — a person, ship etc that tries to carry goods through a blockade
- blockade-runner — a ship or person that passes through a blockade.
- blue wood aster — a composite plant, Aster cordifolius, of North America, having heart-shaped leaves and pale-blue flowers.
- blue-eyed grass — any of various mainly North American iridaceous marsh plants of the genus Sisyrinchium that have grasslike leaves and small flat starlike blue flowers
- bluegrass state — Kentucky (used as a nickname).
- board of health — an agency with responsibility for health in state, country, etc
- board of parole — an agency that determines which prisoners are to be released on parole
- board-certified — A doctor who is board-certified has passed tests and meets the standards of a board of specialists in their area of medicine.
- bohemia-moravia — a former German protectorate including Bohemia and Moravia, 1939–45.
- bohemian forest — a mountain range between the SW Czech Republic and SE Germany. Highest peak: Arber, 1457 m (4780 ft)
- boolean algebra — a system of symbolic logic devised by George Boole to codify logical operations. It is used in computers
- borderline case — a person or thing that is not clearly classifiable as something
- borrower's card — a card issued by a library to individuals or organizations entitling them or their representatives to borrow materials.
- boston marriage — (especially in 19th-century New England) an intimate friendship between two women often maintaining a household together.
- boston massacre — an outbreak (1770) in Boston against British troops, in which a few citizens were killed
- brachial plexus — a network of nerves in the armpits and neck, innervating the shoulders, arms, and hands.
- brachiocephalic — of, relating to, or supplying the arm and head
- brachistochrone — the curve between two points through which a body moves under the force of gravity in a shorter time than for any other curve; the path of quickest descent
- brackett series — a series of lines in the infrared spectrum of hydrogen.
- braille display — (hardware) (Or "refreshable braille display", "refreshable display") An electromechanical device that renders braille with tiny, independently controlled pins used to represent the state of dots in braille cells. Each pin, in its "on" state, raises above the top of its hole in the screen; in its "off" state, it drops below the top of its hole. Older systems used tiny solenoids to control the state of the pins; modern systems are piezoelectric. Typical dimensions of a braille display are 1 line of 40 cells, each cell of two-by-eight dots.
- braille printer — (printer) (Or "(Braille) embosser") A printer, necessarily an impact printer, that renders text as Braille. Blind users call other printers ink printers.