15-letter words containing a, i, c
- be in the black — If a person or an organization is in the black, they do not owe anyone any money.
- bear animalcule — tardigrade (def 3).
- bear comparison — to be sufficiently similar in class or range to be compared with (something else), esp favourably
- béarnaise sauce — a creamy sauce, esp. for meat or fish, made of butter and egg yolks and flavored with wine, vinegar, shallots, and herbs
- benedict arnold — Benedict, 1741–1801, American general in the Revolutionary War who became a traitor.
- benefits agency — an agency that handles the payment of benefits
- benzal chloride — a colorless, oily liquid, C 7 H 6 Cl 2 , used chiefly in the synthesis of benzaldehyde, and in the manufacture of dyes.
- berenice's hair — the constellation Coma Berenices
- 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 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-and-white — displaying only black and white tones; without color, as a picture or chart: a black-and-white photograph.
- 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
- 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)
- 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.
- borderline case — a person or thing that is not clearly classifiable as something
- bowel complaint — bowel disease or condition
- 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.
- branchial cleft — Zoology. one of a series of slitlike openings in the walls of the pharynx between the branchial arches of fishes and aquatic amphibians through which water passes from the pharynx to the exterior.
- branchial pouch — one of a series of rudimentary outcroppings of the inner pharyngeal wall, corresponding to the branchial grooves on the surface.
- branching rules — rules that are used to break down a complex problem into several smaller problems
- branchiostegous — branchiostegal.