15-letter words containing a, c
- beta conversion — (theory) A term from lambda-calculus for beta reduction or beta abstraction.
- beta-adrenergic — pertaining to or involving beta receptors
- biblical hebrew — the Hebrew language used in the Old Testament. Abbreviation: BiblHeb.
- bibliographical — a complete or selective list of works compiled upon some common principle, as authorship, subject, place of publication, or printer.
- bidirectionally — in a bidirectional manner
- 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.
- billing machine — a business machine used to itemize and total customer accounts, produce bills, post account records, etc.
- bioaccumulation — the process in which industrial waste, toxic chemicals, etc. gradually accumulate in living tissue
- bioastronautics — the study of the effects of space flight on living organisms
- biogasification — the conversion of organic matter into biogas.
- biomathematical — relating to biomathematics
- biomechanically — from a biomechanical point of view
- biostatistician — someone who studies or works professionally in the field of biostatistics
- birch partridge — ruffed grouse
- bishop auckland — a town in N England, in central Durham: seat of the bishops of Durham since the 12th century: light industries. Pop: 24 764 (2001)
- bits and pieces — You can use bits and pieces or bits and bobs to refer to a collection of different things.
- bituminous coal — a soft black coal, rich in volatile hydrocarbons, that burns with a smoky yellow flame. Fixed carbon content: 46–86 per cent; calorific value: 1.93 × 107 – 3.63 × 107 J/kg
- black and white — In a black and white photograph or film, everything is shown in black, white, and grey.
- black guillemot — a common guillemot, Cepphus grylle: its summer plumage is black with white wing patches and its winter plumage white with greyish wings
- 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 mountains — a mountain range running from N Monmouthshire and SE Powys (Wales) to SW Herefordshire (England). Highest peak: Waun Fach, 811 m (2660 ft)
- 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-and-white — displaying only black and white tones; without color, as a picture or chart: a black-and-white photograph.
- 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
- blackwall hitch — a knot for hooking tackle to the end of a rope, holding fast when pulled but otherwise loose
- bladder campion — a European caryophyllaceous plant, Silene vulgaris, having white flowers with an inflated calyx
- blagoveshchensk — a city and port in E Russia, in Siberia on the Amur River. Pop: 222 000 (2005 est)
- blanc de blancs — white wine, esp. champagne, made from white grapes
- blank cartridge — a cartridge containing powder but no bullet: used in battle practice or as a signal
- blast injection — the injection of liquid fuel directly into the cylinder of an internal-combustion engine using a blast of high-pressure air to atomize the spray of fuel
- blenheim palace — a palace in Woodstock in Oxfordshire: built (1705–22) by Sir John Vanbrugh for the 1st Duke of Marlborough as a reward from the nation for his victory at Blenheim; gardens laid out by Henry Wise and Capability Brown; birthplace of Sir Winston Churchill (1874)
- 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 cattle dog — an Australian breed of dog with a bluish coat, developed for herding cattle
- blueback salmon — sockeye salmon.
- boa constrictor — A boa constrictor is a large snake that kills animals by wrapping itself round their bodies and squeezing them to death. Boa constrictors are found mainly in South and Central America and the West Indies.
- 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.
- boarding school — A boarding school is a school which some or all of the pupils live in during the school term. Compare day school.
- book of account — a book to keep accounts in; ledger
- book of changes — an ancient Chinese book of divination, in which 64 pairs of trigrams are shown with various interpretations.
- 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.