20-letter words containing a, b, c, o
- demographic timebomb — a predicted shortage of school-leavers and consequently of available workers, caused by an earlier drop in the birth rate, resulting in an older workforce
- devil's bit scabious — a similar and related Eurasian marsh plant, Succisa pratensis
- diabetic retinopathy — a disorder of the blood vessels of the retina occurring as a complication of poorly controlled diabetes mellitus and often leading to blindness.
- diamondback terrapin — any edible North American terrapin of the genus Malaclemys, esp M. terrapin, occurring in brackish and tidal waters and having diamond-shaped markings on the shell: family Emydidae
- disability allowance — an amount of money paid by the government to people who are unable to work because of a disability. This is a general term or, in the UK, a shorter way of referring to what is officially called the Disability Living Allowance
- distribution channel — trade: retailer
- district of columbia — a federal area in the E United States, on the Potomac, coextensive with the federal capital, Washington. 69 sq. mi. (179 sq. km). Abbreviation: DC (for use with zip code), D.C.
- double-aspect theory — a monistic theory that holds that mind and body are not distinct substances but merely different aspects of a single substance
- double-trailer truck — tandem trailer (def 1).
- drum and bugle corps — a marching band of drum players and buglers.
- duck-billed dinosaur — hadrosaur.
- effective computable — (theory) A term describing a function for which there is an effective algorithm that correctly calculates the function. The algorithm must consist of a finite sequence of instructions.
- electoral boundaries — the way that a country or area is divided for the purposes of voting in an election
- embryo vitrification — a method of in vitro fertilization in which the embryo is exposed to a vitreous solution and frozen before being thawed and implanted into the uterus
- equilibrium constant — The equilibrium constant is the ratio between the amount of reactants and the amount of product for a particular chemical reaction, used to calculate chemical behavior.
- fast-breeder reactor — a breeder reactor in which there is no moderator and fission is caused by high-energy neutrons.
- feast of tabernacles — Sukkoth.
- fontainebleau school — a group of artists, many of them Italian and Flemish, who worked on the decorations of the palace of Fontainebleau in the 16th century.
- for sb's delectation — If you do something for someone's delectation, you do it to give them enjoyment or pleasure.
- frederick barbarossa — ("Frederick Barbarossa") 1123?–90, king of Germany 1152–90; king of Italy 1152–90: emperor of the Holy Roman Empire 1152–90.
- front-to-back engine — an engine in which the crankshaft is arranged front to back along the axis of the vehicle
- gorno-altai republic — a constituent republic of S Russia: mountainous, rising over 4350 m (14 500 ft) in the Altai Mountains of the south. Capital: Gorno-Altaisk. Pop: 202 900 (2002). Area: 92 600 sq km (35 740 sq miles)
- grey-crowned babbler — an insect-eating Australian bird, Pomatostomus temporalis of the family Timaliidae
- hit the panic button — an alarm button for use in an emergency, as to summon help.
- hudson's bay company — a company chartered in England in 1670 to carry on fur trading with the Indians in North America.
- hyperbolic cotangent — a hyperbolic function that is the ratio of cosh to sinh, being the reciprocal of tanh; coth
- in contact (with sb) — If you are in contact with someone, you regularly meet them or communicate with them.
- in the public domain — able to be discussed and examined freely by the general public
- indian cucumber root — a North American plant, Medeola virginiana, of the lily family, having whorled leaves, nodding, greenish-yellow flowers, and an edible root.
- job control language — a language used to construct statements that identify a particular job to be run and specify the job's requirements to the operating system under which it will run. Abbreviation: JCL.
- justifiable homicide — murder committed under extenuating circumstances
- labour-saving device — a machine, gadget, etc, that reduces (human) effort, hard work or labour
- lampbrush chromosome — a chromosome with looped projections resembling a brush
- land-office business — a lively, booming, expanding, or very profitable business.
- like a ton of bricks — (used esp of the manner of punishing or reprimanding someone) with great force; severely
- longitude by account — the longitude of the position of a vessel as estimated by dead reckoning.
- macias nguema biyogo — a former name of Bioko.
- massachusetts ballot — a ballot on which the candidates, with their party designations, are listed alphabetically in columns under the office for which they were nominated.
- megabytes per second — (unit) (MBps, MB/s) Millions of bytes per second. A unit of data rate. 1 MB/s = 1,000,000 bytes per second (not 1,048,576).
- meta-dichlorobenzene — a colorless liquid, C 6 H 4 Cl 2 , soluble in alcohol and ether: used as a fumigant and insecticide.
- microwave background — a background of microwave electromagnetic radiation with a black-body spectrum discovered in 1965, understood to be the thermal remnant of the big bang with which the universe began
- miliary tuberculosis — tuberculosis in which the bacilli are spread by the blood from one point of infection, producing small tubercles in other parts of the body.
- monkey on one's back — any mammal of the order Primates, including the guenons, macaques, langurs, and capuchins, but excluding humans, the anthropoid apes, and, usually, the tarsier and prosimians. Compare New World monkey, Old World monkey.
- moreton bay chestnut — an Australian leguminous tree, Castanospermum australe, having thin smooth bark and yellow or reddish flowers: used in furniture manufacture
- most significant bit — (MSB) Bit n-1 in an n bit binary number, the bit with the greatest weight (2^(n-1)). The first or leftmost bit when the number is written in the usual way.
- multiplication table — Arithmetic. a tabular listing of the products of any two numbers of a set, usually of the integers 1 through 10 or 1 through 12.
- nickel tetracarbonyl — nickel carbonyl.
- obfuscated c contest — (programming) The International Obfuscated C Code Contest (IOCCC) is an annual contest run since 1984 over Usenet by Landon Curt Noll and friends. The overall winner is whoever produces the most unreadable, creative, and bizarre (but working) C program. Various other prizes are awarded at the judges' whim. C's terse syntax and macro-preprocessor facilities give contestants a lot of maneuvering room. The winning programs often manage to be simultaneously funny, breathtaking works of art and horrible examples of how *not* to code in C. This relatively short and sweet hello, world program demonstrates obfuscated C: /* HELLO WORLD program * by Jack Applin and Robert Heckendorn, 1985 */ main(v,c)char**c;{for(v[c++]="Hello, world!\n)"; (!!c)[*c]&&(v--||--c&&execlp(*c,*c,c[!!c]+!!c,!c)); **c=!c)write(!!*c,*c,!!**c);} Here's another good one: /* Program to compute an approximation of pi * by Brian Westley, 1988 */ #define _ -F<00||--F-OO--; int F=00,OO=00; main(){F_OO();printf("%1.3f\n",4.*-F/OO/OO);}F_OO() { _-_-_-_ _-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_-_-_-_-_ _-_-_-_-_-_-_-_ _-_-_-_ } Note that this program works by computing its own area. For more digits, write a bigger program.
- objective relativism — the doctrine that knowledge of real objects is relative to the individual.
- off the beaten track — formed or shaped by blows; hammered: a dish of beaten brass.