21-letter words containing f, e, r
- differential analyzer — an analog computer designed for solving certain differential equations.
- differential calculus — the branch of mathematics that deals with differentials and derivatives.
- differential equation — an equation involving differentials or derivatives.
- differential geometry — the branch of mathematics that deals with the application of the principles of differential and integral calculus to the study of curves and surfaces.
- differential operator — a function, usually expressed as a polynomial, that indicates linear combinations of the derivatives of the expression on which it operates.
- differential quotient — derivative (def 6).
- differential topology — the branch of topology that studies the properties of differentiable manifolds that remain invariant under diffeomorphisms.
- differential windlass — a pair of hoisting drums of different diameter turning at the same rate, such that a pulley suspended below them on a line wound on the larger drum and unwound from the smaller drum is raised with mechanical advantage.
- differential-quotient — something that has been derived.
- divine right of kings — the doctrine that the right of rule derives directly from God, not from the consent of the people.
- draft once reuse many — (jargon) (DORUM) Reusing parts of a document to produce parts of an entirely new document. The term normally refers to text documents but the practise is equally common in programming.
- drop the handkerchief — a children's game in which all the players but one stand in a circle facing inward, while that one player stealthily drops a handkerchief behind a player in the circle who must pursue and attempt to catch the one who dropped the handkerchief before the latter reaches the vacated place.
- dumfries and galloway — a region in S Scotland. 2460 sq. mi. (6371 sq. km).
- dutch reformed church — of or relating to a Protestant denomination (Dutch Reformed Church) founded by Dutch settlers in New York in 1628 and renamed the Reformed Church in America in 1867.
- dwarf japanese quince — a low, shrubby, Japanese flowering quince, Chaenomeles japonica, of the rose family, having salmon-to-orange flowers and yellow fruit.
- eiffel source checker — A compiler front-end for Eiffel 3 by Olaf Langmack <[email protected]> and Burghardt Groeber. It was generated automatically with the Karlsruhe toolbox for compiler construction according to the most recent public language definition. The parser derives an easy-to-use abstract syntax tree, supports elementary error recovery and provides a precise source code indication of errors. It performs a strict syntax check and analyses 4000 lines of source code per second on a Sun SPARC workstation.
- electric flux density — Electric flux density is electric flux passing through a unit area perpendicular to the direction of the flux.
- electromagnetic field — a field of force associated with a moving electric charge equivalent to an electric field and a magnetic field at right angles to each other and to the direction of propagation
- ethics of the fathers — a treatise of the Mishnah that comprises six chapters and consists chiefly of proverbs, aphorisms, and principles of ethics, law, and religion.
- eyes right (or left) — a command to snap the head to the right (or left) while marching, as a salute when passing in review
- faculty board meeting — a meeting of the governing body of a faculty
- fall all over oneself — to drop or descend under the force of gravity, as to a lower place through loss or lack of support.
- false memory syndrome — a psychological condition in which a person believes that he or she remembers events that have not actually occurred.
- false-memory syndrome — a psychological condition in which a person believes that he or she remembers events that have not actually occurred.
- federal reserve board — a U.S. federal banking system that is under the control of a central board of governors (Federal Reserve Board) with a central bank (Federal Reserve Bank) in each of 12 districts and that has wide powers in controlling credit and the flow of money as well as in performing other functions, as regulating and supervising its member banks.
- feline leukemia virus — a retrovirus, mainly affecting cats, that depresses the immune system and leads to opportunistic infections, lymphosarcoma, and other disorders. Abbreviation: FeLV, FLV.
- fermat's last theorem — the unproved theorem that the equation xn + yn = zn has no solution for x, y, z nonzero integers when n is greater than 2.
- ferric sodium oxalate — an emerald-green, crystalline, extremely water-soluble salt, used in photography and blueprinting.
- file service protocol — (protocol) (FSP) A protocol, similar to FTP, for copying files between computers. It's designed for anonymous archives, and has protection against server and network overloading. It doesn't use connections so it can survive interruptions in service. Until 1993-08-12, FSP didn't stand for anything. Wen-King was responsible for the initials and Michael Grubb <[email protected]> for their eventual expansion. Other suggestions were "File Slurping Protocol", "Flaky Stream Protocol" and "FTP's Sexier Partner".
- financial underwriter — A financial underwriter is an insurance employee working in financial underwriting.
- first-dollar coverage — insurance that provides payment for the full loss up to the insured amount with no deductibles.
- five civilized tribes — the Cherokees, Chickasaws, Choctaws, Creeks, and Seminoles of the Indian Territory
- flat-coated retriever — one of an English breed of large sporting dogs having a flat, dense, shiny black or liver-colored coat, small ears, and long jaws, used for retrieving game from both water and land.
- flip someone the bird — give someone the finger (see phrase under finger)
- flotation compartment — in a boat, an enclosed section filled with air or gas to give buoyancy
- flowering wintergreen — fringed polygala.
- food conversion ratio — a ratio expressing the weight of food required to produce a unit gain in the live weight of an animal
- food standards agency — the full form of FDA
- for someone's benefit — something that is advantageous or good; an advantage: He explained the benefits of public ownership of the postal system.
- for the benefit of sb — If you say that someone is doing something for the benefit of a particular person, you mean that they are doing it for that person.
- foreground processing — a type of processing that supports interaction between interactive and batch operations
- foreign correspondent — a correspondent, as for a periodical, assigned to send back articles and news dispatches from a foreign country for publication.
- foreign exchange rate — the rate that specifies how much the currency of a nation is worth in terms of the currency of another nation
- forensic anthropology — the branch of physical anthropology in which anthropological data, criteria, and techniques are used to determine the sex, age, genetic population, or parentage of skeletal or biological materials in questions of civil or criminal law.
- fort lesley j. mcnair — a military reservation in SW Washington, D.C., on the Potomac River, SW of the Capitol.
- forward exchange rate — the exchange rate of a currency to be delivered at a later date
- four-footed butterfly — any of several butterflies of the family Nymphalidae, including the fritillaries, mourning cloaks, anglewings, and commas, characterized by reduced, nonfunctional forelegs.
- fractional extraction — Fractional extraction is a process of extracting a liquid from a liquid, in which two solutes are separated, with one leaving in the extract and one in the raffinate.
- fragmentation grenade — a grenade with a heavy metal casing that shatters, on exploding, into fragments that travel at high speed and with great force.
- framing specification — A specification of the "protocol bits" that surround the "data bits" on a communications channel to allow the data to be "framed" into chunks, like start and stop bits in EIA-232. It allows a receiver to synchronize at points along the data stream.