20-letter words containing a, b, c, t, o, r
- a drop in the bucket — an amount very small in relation to what is needed or desired
- absolute convergence — the property of an infinite series in which the series formed by replacing each term in the original series with its absolute value converges. Compare conditional convergence.
- abstract of accounts — a published condensed summary of a company or organization's annual accounts
- accommodation bureau — a business that finds accommodation for its clients
- acetylmethylcarbinol — acetoin.
- ambulatory care unit — a part of hospital where treatment is given to non-resident patients
- american labor party — a U.S. political party (1936–56) organized in New York City to gain independent political status for the labor and liberal factions of the Democratic Party.
- ammonium bicarbonate — a white, crystalline, water-soluble solid, NH 4 HCO 3 , used chiefly in the manufacture of baking powder.
- antifriction bearing — a roller bearing or ball bearing.
- architectural bronze — a brass alloy of about 57 percent copper, 41 percent zinc, and 2 percent lead.
- automobile insurance — Automobile insurance is insurance coverage for cars.
- baccalaureate sermon — a farewell sermon addressed to a graduating class in some U.S. colleges and schools.
- back the wrong horse — to bet on a horse that loses the race
- background radiation — low-intensity radiation from, for example, small amounts of radioisotopes in soil, air, building materials, etc
- backwards compatible — backward compatibility
- bacteriochlorophylls — Plural form of bacteriochlorophyll.
- ballistic trajectory — the path of an unpowered object, as a missile, moving only under the influence of gravity and possibly atmospheric friction and with its surface providing no significant lift to alter the course of flight.
- basal metabolic rate — the rate at which heat is produced by the body at rest, 12 to 14 hours after eating, measured in kilocalories per square metre of body surface per hour
- basic lead carbonate — ceruse.
- basic object adapter — (architecture) (BOA) Part of the CORBA architecture.
- bats-wing coral-tree — a small tree, Erythrina verspertilio, of tropical and subtropical Australia with red flowers and leaves shaped like the wings of a bat
- be called to the bar — to become a barrister
- biological diversity — Biological diversity is the same as biodiversity.
- black-throated diver — a diving bird, Gavia arctica, found in Europe and Asia, and a rare summer visitor to the UK
- blue screen of death — (humour) (BSOD) The infamous white-on-blue text screen which appears when Microsoft Windows crashes. BSOD is mostly seen on the 16-bit systems such as Windows 3.1, but also on Windows 95 and apparently even under Windows NT 4. It is most likely to be caused by a GPF, although Windows 95 can do it if you've removed a required CD-ROM from the drive. It is often impossible to recover cleanly from a BSOD. The acronym BSOD is sometimes used as a verb, e.g. "Windoze just keeps BSODing on me today".
- bolometric magnitude — the magnitude of a star derived either from the total energy that it radiates at all wavelengths or from the total energy of those of its wavelengths that are received on earth.
- born-again christian — person: evangelical
- boulogne billancourt — a suburb of Paris, in N France.
- boulogne-billancourt — an industrial suburb of SW Paris. Pop: 106 367 (1999)
- bring home the bacon — If you bring home the bacon, you achieve what you needed to achieve.
- broadcast journalism — journalism as practiced in radio and television.
- broadcasting station — a television or radio station
- buck's horn plantain — a Eurasian plant, Plantago coronopus, having leaves resembling a buck's horn: family Plantaginaceae
- buoyancy compensator — an inflatable vest used to control one's buoyancy underwater or to rest at the surface, usually having a connecting hose for inflation or deflation by mouth and a CO 2 cartridge for rapid, emergency inflation.
- bureau of the census — the division of the Department of Commerce that gathers, tabulates, and correlates census statistics.
- by their own account — If you say that something concerning a particular person is true by his or her own account, you mean that you believe it because that person has said it is true.
- by/from all accounts — If you say that something is true by all accounts or from all accounts, you believe it is true because other people say so.
- cantabrian mountains — a mountain chain along the N coast of Spain, consisting of a series of high ridges that rise over 2400 m (8000 ft): rich in minerals (esp coal and iron)
- carbohydrate loading — the practice of eating high amounts of carbohydrates, sometimes after a period of low carbohydrate intake, for several days immediately before competing in an athletic event, especially a marathon, in order to store glycogen in the body, thereby providing greater reserves of energy.
- carbon sequestration — the prevention of greenhouse gas build-up in the earth's atmosphere by methods such as planting trees to absorb carbon dioxide or pumping carbon dioxide into underground reservoirs
- carbon tetrachloride — a colourless volatile nonflammable sparingly soluble liquid made from chlorine and carbon disulphide; tetrachloromethane. It is used as a solvent, cleaning fluid, and insecticide. Formula: CCl4
- central bedfordshire — a unitary authority of S central England. Pop: 252 100 (2007 est). Area: 712 sq km (275 sq miles)
- checkerboard pattern — checked pattern that looks like a draughtboard
- chromatic aberration — a defect in a lens system in which different wavelengths of light are focused at different distances because they are refracted through different angles. It produces a blurred image with coloured fringes
- colour look-up table — colour palette
- complex carbohydrate — a carbohydrate, as sucrose or starch, that consists of two or more monosaccharide units.
- computability theory — (mathematics) The area of theoretical computer science concerning what problems can be solved by any computer. A function is computable if an algorithm can be implemented which will give the correct output for any valid input. Since computer programs are countable but real numbers are not, it follows that there must exist real numbers that cannot be calculated by any program. Unfortunately, by definition, there isn't an easy way of describing any of them! In fact, there are many tasks (not just calculating real numbers) that computers cannot perform. The most well-known is the halting problem, the busy beaver problem is less famous but just as fascinating.
- conservative baptist — a member of a Protestant denomination (Conservative Baptist Association of America) organized in Milwaukee, Wisconsin, in 1948.
- constant de rebecque — Henri Benjamin [ahn-ree ban-zha-man] /ɑ̃ˈri bɛ̃ ʒaˈmɛ̃/ (Show IPA), (Benjamin Constant) 1767–1830, French statesman and author, born in Switzerland.
- controlled substance — a drug regulated by the Federal Controlled Substances Acts, including opiates, depressants, stimulants, and hallucinogens
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