20-letter words containing a, c, r, o, t
- elementary education — the first six to eight years of a child's education
- 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
- entrance examination — admission test
- entry qualifications — the qualifications people wishing to enter an organization, university, etc, have to have
- environmental impact — the impact on the environment created by an industry, service, plan, or project
- 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.
- equivalence relation — (mathematics) A relation R on a set including elements a, b, c, which is reflexive (a R a), symmetric (a R b => b R a) and transitive (a R b R c => a R c). An equivalence relation defines an equivalence class. See also partial equivalence relation.
- erythema infectiosum — a mild infectious disease of childhood, caused by a virus, characterized by fever and a red rash spreading from the cheeks to the limbs and trunk
- factor in (or into) — to include as a factor
- factor of production — any instrument, agent, etc., employed in the production of goods and services.
- fast-breeder reactor — a breeder reactor in which there is no moderator and fission is caused by high-energy neutrons.
- father of the chapel — (in British trade unions in the publishing and printing industries) a shop steward
- feast of tabernacles — Sukkoth.
- feather in one's cap — one of the horny structures forming the principal covering of birds, consisting typically of a hard, tubular portion attached to the body and tapering into a thinner, stemlike portion bearing a series of slender, barbed processes that interlock to form a flat structure on each side.
- federal constitution — Constitution of the United States.
- fermentation alcohol — alcohol (def 1).
- fermentation-alcohol — Also called ethyl alcohol, grain alcohol, ethanol, fermentation alcohol. a colorless, limpid, volatile, flammable, water-miscible liquid, C 2 H 5 OH, having an etherlike odor and pungent, burning taste, the intoxicating principle of fermented liquors, produced by yeast fermentation of certain carbohydrates, as grains, molasses, starch, or sugar, or obtained synthetically by hydration of ethylene or as a by-product of certain hydrocarbon syntheses: used chiefly as a solvent in the extraction of specific substances, in beverages, medicines, organic synthesis, lotions, tonics, colognes, rubbing compounds, as an automobile radiator antifreeze, and as a rocket fuel. Compare denatured alcohol, methyl alcohol.
- file descriptor leak — (programming) (Or "fd leak" /F D leek/) A kind of programming bug analogous to a core leak, in which a program fails to close file descriptors ("fd"s) after file operations are completed, and thus eventually runs out of them. See leak.
- financial controller — a senior executive in usually commercial organization who is in charge of financial affairs and oversees such things as the preparation of budgets and accounts
- first earl of cromer — 1st Earl of, Evelyn Baring.
- fission-track dating — the dating of samples of minerals by comparing the tracks in them by fission fragments of the uranium nuclei they contain, before and after irradiation by neutrons
- fixed action pattern — a highly stereotyped pattern of behavior that is characteristic of a particular species.
- fixed-price contract — a contract in which the price is preset and invariable, regardless of the actual costs of production.
- flat-plate collector — a type of solar collector consisting of a series of flat glass or plastic plates with black metal surfaces that absorb solar energy.
- flight data recorder — a recording device that records relevant data during an aircraft's flight
- florence nightingale — Florence ("the Lady with the Lamp") 1820–1910, English nurse: reformer of hospital conditions and procedures; reorganizer of nurse's training programs.
- for sb's delectation — If you do something for someone's delectation, you do it to give them enjoyment or pleasure.
- fractionating column — a long vertical cylinder used in fractional distillation, in which internal reflux enables separation of high and low boiling fractions to take place
- frequency modulation — FM.
- front-to-back engine — an engine in which the crankshaft is arranged front to back along the axis of the vehicle
- frontenac et palluau — Comte de (Louis de Buade) 1620?–98, French governor of New France 1672–82, 1689–98.
- frosting on the cake — a sweet mixture, cooked or uncooked, for coating or filling cakes, cookies, and the like; icing.
- fulminate of mercury — a gray, crystalline solid, Hg(CNO) 2 , used chiefly in the manufacture of commercial and military detonators.
- general practitioner — a medical practitioner whose practice is not limited to any specific branch of medicine or class of diseases. Abbreviation: G.P.
- get a real computer! — (jargon) A typical hacker response to news that somebody is having trouble getting work done on a toy system or bitty box. The threshold for "real computer" rises with time. As of mid-1993 it meant multi-tasking, with a hard disk, and an address space bigger than 16 megabytes. At this time, according to GLS, computers with character-only displays were verging on "unreal". In 2001, a real computer has a one gigahertz processor, 128 MB of RAM, 20 GB of hard disk, and runs Linux.
- glyceryl monoacetate — acetin.
- go like the clappers — to move extremely fast
- 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)
- grade school teacher — a teacher in a grade school
- graphics accelerator — (graphics, hardware) Hardware (often an extra circuit board) to perform tasks such as plotting lines and surfaces in two or three dimensions, filling, shading and hidden line removal.
- hampton court palace — a royal palace in Hampton, London, built in 1515 by Cardinal Wolsey
- helicopter parenting — a style of child rearing in which an overprotective mother or father discourages a child's independence by being too involved in the child's life: In typical helicopter parenting, a mother or father swoops in at any sign of challenge or discomfort.
- heteropolysaccharide — (carbohydrate) any polysaccharide formed from two or more different kinds of monosaccharide.
- hierarchical routing — The complex problem of routing on large networks can be simplified by breaking a network into a hierarchy of smaller networks, where each level is responsible for its own routing. The Internet has, basically, three levels: the backbones, the mid-levels, and the stub networks. The backbones know how to route between the mid-levels, the mid-levels know how to route between the sites, and each site (being an autonomous system) knows how to route internally. See also Exterior Gateway Protocol, Interior Gateway Protocol, transit network.
- historical sociology — the sociological study of the origins and development of societies and of other social phenomena that seeks underlying laws and principles.
- honeysuckle ornament — anthemion.
- horizontal microcode — (processor) Microcode using horizontal encoding.
- horizontal scan rate — (hardware) (HSR) The measure of how many scan lines of pixels a monitor can display in one second, expressed in kHz (generally somewhere between 20 and 100 kHz). The HSR is controlled by the horizontal sync signal generated by the video controller, but is limited by the speed with which the monitor can scan the electron beam horizontally across the screen and then return it to the beginning of the next line.
- hot under the collar — the part of a shirt, coat, dress, blouse, etc., that encompasses the neckline of the garment and is sewn permanently to it, often so as to fold or roll over.
- human genome project — a federally funded U.S. scientific project to identify both the genes and the entire sequence of DNA base pairs that make up the human genome.