15-letter words containing r, a, b, i, u
- ab urbe condita — from the founding of the city (Rome, about 753 b.c.). Abbreviation: A.U.C.
- absence seizure — petit mal.
- acute bisectrix — See under bisectrix (def 1).
- adygei republic — a constituent republic of SW Russia, bordering on the Caucasus Mountains: chiefly agricultural but with some mineral resources. Capital: Maikop. Pop: 447 000 (2002). Area: 7600 sq km (2934 sq miles)
- african buffalo — Cape buffalo.
- agribusinessman — a person who engages in agribusiness
- airing cupboard — In British houses, an airing cupboard is a warm cupboard where you put clothes and other things that have been washed and partly dried, to make sure they are completely dry.
- aluminum borate — a white, granular, water-insoluble powder, 2Al 2 O 3 ⋅B 2 O 3 ⋅3H 2 O, used chiefly in the manufacture of crown glass.
- aluminum bronze — any of several alloys containing a high percentage of copper with from 5 to 11 percent aluminum and varying amounts of iron, nickel, manganese, and other elements.
- ambulance train — a train designed to carry sick or injured people
- american beauty — a variety of hybrid, perennial red rose
- amicable number — either of a pair of positive integers in which each member is equal to the sum of the submultiples of the other, as 220 and 284.
- annus mirabilis — a year of wonders, catastrophes, or other notable events
- anti-republican — of, relating to, or of the nature of a republic.
- antibureaucracy — Opposed to bureaucracy.
- antituberculous — (medicine) Acting to combat or counteract tuberculosis.
- appeal tribunal — An appeal tribunal is a special court or committee that is formed to reconsider a decision made by another court or committee.
- arabic numerals — the figures 1, 2, 3, 4, 5, 6, 7, 8, 9, and the 0 (zero) that originated in India; Hindu-Arabic numerals
- archaebacterium — Any primitive bacteria-like organism in the kingdom Archaea.
- arthur brisbane — Arthur, 1864–1936, U.S. journalist.
- ascribed status — the social position assigned to a person on the basis of kinship, ethnic group, sex, etc.
- atrabiliousness — The state or quality of being characterized by melancholy or glumness.
- aurora borealis — the aurora seen around the North Pole
- autobiographers — Plural form of autobiographer.
- autobiographies — Plural form of autobiography.
- backup rotation — (operating system) Any system for re-using backup media, e.g. magnetic tape. One extreme would be to use the same media for every backup (e.g. copy disk A to disk B), the other extreme would be to use new media every time. The trade-off is between the cost of buying and storing media and the ability to restore any version of any file. One example is the Grandfather, Father, Son (GFS) scheme.
- bacteriophagous — Pertaining to the predation and consumption of bacterium.
- badminton court — the court on which games of badminton are played
- ballpark figure — approximate number
- banana republic — Small, poor countries that are politically unstable are sometimes referred to as banana republics.
- bangtail muster — a roundup of cattle to be counted, each one having the hairs on its tail docked as it is counted
- banking product — one of the various services offered by a bank to its customers: mortgages, loans, insurance etc
- barbituric acid — a white crystalline solid used in the preparation of barbiturate drugs. Formula: C4H4N2O3
- bargain counter — a store counter on which goods are displayed for sale at reduced prices
- bargain-hunting — the act of shopping for items sold at cheap, esp discounted, prices
- bargaining unit — a specific group of employees who are covered by the same collective agreement or set of agreements and represented by the same bargaining agent or agents
- barium chloride — a poisonous compound, BaCl2, consisting of flat white crystals that are soluble in water: it is used to treat water, metals, leather, etc.
- barium chromate — a yellow, crystalline compound, BaCrO 4 , used as a pigment (barium yellow)
- barium peroxide — a gray-white powder, BaO2, used as a bleach and in making hydrogen peroxide
- barium stearate — a white, crystalline, water-insoluble solid, Ba(C 18 H 35 O 2) 2 , used chiefly as a waterproofing agent and as a lubricant.
- barium sulphate — a white insoluble fine dense powder, used as a pigment, as a filler for paper, rubber, etc, and in barium meals. Formula: BaSO4
- barium titanate — a crystalline ceramic used in capacitors and piezoelectric devices. Formula: BaTiO3
- barry mountains — a mountain range in SE Australia, in E Victoria: part of the Australian Alps
- basic autocoder — Early system on IBM 7070. Listed in CACM 2(5):16 (May 1959).
- bathurst island — an island off the coast of N Nunavut, Canada, in the Arctic Archipelago: present south of the North Magnetic Pole nearby. 7609 sq. mi. (19,707 sq. km).
- bear animalcule — tardigrade (def 3).
- béarnaise sauce — a creamy sauce, esp. for meat or fish, made of butter and egg yolks and flavored with wine, vinegar, shallots, and herbs
- bernoulli trial — one of a sequence of independent experiments each of which has the same probability of success, such as successive throws of a die, the outcome of which is described by a binomial distribution
- 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.
- bioastronautics — the study of the effects of space flight on living organisms
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