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19-letter words containing t, h, e, f

  • feather-tail glider — pygmy glider.
  • fetch-execute cycle — (architecture, processor)   The sequence of actions that a central processing unit performs to execute each machine code instruction in a program. At the beginning of each cycle the CPU presents the value of the program counter on the address bus. The CPU then fetches the instruction from main memory (possibly via a cache and/or a pipeline) via the data bus into the instruction register. From the instruction register, the data forming the instruction is decoded and passed to the control unit which sends a sequence of control signals to the relevant function units of the CPU to perform the actions required by the instruction such as reading values from registers, passing them to the ALU to add them together and writing the result back to a register. The program counter is then incremented to address the next instruction and the cycle is repeated. The fetch-execute cycle was first proposed by John von Neumann.
  • fifteenth amendment — an amendment to the U.S. Constitution, ratified in 1870, prohibiting the restriction of voting rights “on account of race, color, or previous condition of servitude.”.
  • fifth-wheel trailer — a horizontal ring or segment of a ring, consisting of two bands that slide on each other, placed above the front axle of a carriage and designed to support the forepart of the body while allowing it to turn freely in a horizontal plane.
  • fight to the finish — A fight to the finish is one in which one of the people or groups fighting is killed or completely defeated.
  • fighter-interceptor — a fighter plane used for the defense of a region against air attack, especially by attacking bombers.
  • finds its/their way — If something finds its way somewhere, it comes to that place, especially by chance.
  • finger on the pulse — If you have your finger on the pulse of something, you know all the latest opinions or developments concerning it.
  • first-past-the-post — A first-past-the-post system for choosing members of parliament or other representatives is one in which the candidate who gets most votes wins.
  • fixed exchange rate — finance: set rate of exchange
  • flame-of-the-forest — a leguminous tree, Butea frondosa, native to E India and Myanmar, having hanging clusters of scarlet flowers
  • flannelmouth sucker — a sucker, Catostomus latipinnis, of the Colorado River and its tributaries.
  • flavor of the month — Informal. the subject of intense, usually temporary interest; the current fashion.
  • fluoride toothpaste — toothpaste containing a small amount of fluoride as protection against tooth decay
  • fly in the ointment — Also called true fly. any of numerous two-winged insects of the order Diptera, especially of the family Muscidae, as the common housefly.
  • focal plane shutter — an opaque shield in a camera, lying in the focal plane of the lens, that, when tripped, admits light to expose the film or plate for a predetermined period, usually a fraction of a second
  • focal-plane shutter — a camera shutter situated directly in front of the film.
  • for the life of one — the condition that distinguishes organisms from inorganic objects and dead organisms, being manifested by growth through metabolism, reproduction, and the power of adaptation to environment through changes originating internally.
  • for the sake of sth — If you do something for the sake of something, you do it for that purpose or in order to achieve that result. You can also say that you do it for something's sake.
  • forensic psychiatry — the use of psychiatric knowledge and techniques in questions of law, as in determining legal insanity.
  • four colour theorem — four colour map theorem
  • frameshift mutation — a mutation caused by frameshift.
  • frederick the great — Frederick I (def 2).
  • freedom of the city — nominal citizenship in a city, conferred as an honor upon important visitors.
  • freedom of the seas — the doctrine that ships of neutral countries may sail anywhere on the high seas without interference by warring powers.
  • french north africa — the former French possessions of Algeria, French Morocco, and Tunisia
  • friend of the court — amicus curiae.
  • from rags to riches — a worthless piece of cloth, especially one that is torn or worn.
  • frontier technology — innovative or new technology
  • general of the army — the highest ranking military officer; the next rank above general.
  • get off one's chest — Anatomy. the trunk of the body from the neck to the abdomen; thorax.
  • get the hang of sth — If you get the hang of something such as a skill or activity, you begin to understand or realize how to do it.
  • go off the deep end — final or ultimate: the end result.
  • go on the offensive — If you go on the offensive, go over to the offensive, or take the offensive, you begin to take strong action against people who have been attacking you.
  • go through the roof — the external upper covering of a house or other building.
  • grandfather's chair — wing chair.
  • grandfather's clock — a pendulum floor clock having a case as tall as or taller than a person; tall-case clock; long-case clock.
  • great wall of china — a system of fortified walls with a roadway along the top, constructed as a defense for China against the nomads of the regions that are now Mongolia and Manchuria: completed in the 3rd century b.c., but later repeatedly modified and rebuilt. 2000 miles (3220 km) long.
  • greenhouse whitefly — See under whitefly.
  • gulf of tehuantepec — an inlet of the Pacific on the south coast of the Isthmus of Tehuantepec in S Mexico
  • half wave rectifier — A half wave rectifier removes the negative component of an alternating signal leaving only the positive part.
  • half-wave rectifier — a rectifier that changes only one half of a cycle of alternating current into a pulsating, direct current.
  • halt and catch fire — (humour, processor)   (HCF) Any of several undocumented and semi-mythical machine instructions with destructive side-effects, supposedly included for test purposes on several well-known architectures going as far back as the IBM 360. The Motorola 6800 microprocessor was the first for which an HCF opcode became widely known. This instruction caused the processor to read every memory location sequentially until reset.
  • hang five (or ten) — to ride a surfboard with the toes of one (or both) feet draped over the front edge of the board
  • hang on the lips of — to listen to with close attention
  • hatfield-mccoy feud — a blood feud between two mountain clans on the West Virginia–Kentucky border, the Hatfields of West Virginia and the McCoys of Kentucky, that grew out of their being on opposite sides during the Civil War and was especially violent during 1880–90.
  • have a few too many — If you say that someone has had a few too many or has had a few, you mean that they have drunk too many alcoholic drinks.
  • have a nose for sth — If you say that someone has a nose for something, you mean that they have a natural ability to find it or recognize it.
  • have half a mind to — to have the intention of
  • have the makings of — show potential as
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