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20-letter words containing d, a, n, t

  • fight tooth and nail — fight fiercely
  • 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 penalty (fine) — a fine of a fixed amount of money for a particular offence
  • fixed-price contract — a contract in which the price is preset and invariable, regardless of the actual costs of production.
  • fixed-rate financing — a loan system in which the amount paid back does not fluctuate according to interest rated
  • fold-and-thrust belt — a linear or arcuate region of the earth's surface that has been subjected to severe folding and thrust faulting
  • for sb's delectation — If you do something for someone's delectation, you do it to give them enjoyment or pleasure.
  • forbidden transition — an electronic transition in an atom, molecule, etc, that is not permitted by electric dipole selection rules
  • fore-and-aft topsail — gaff topsail (def 1).
  • fourteenth amendment — an amendment to the U.S. Constitution, ratified in 1868, defining national citizenship and forbidding the states to restrict the basic rights of citizens or other persons.
  • frequency modulation — FM.
  • fridtjof nansen land — Franz Josef Land.
  • friends of the earth — an organization of environmentalists and conservationists whose aim is to promote the sustainable use of the earth's resources
  • front-end volatility — Front-end volatility is the ability of the fractions with lower boiling points, such as butane, to evaporate at normal temperatures.
  • fulminating compound — a fulminate.
  • fundamental constant — a physical constant, such as the gravitational constant or speed of light, that plays a fundamental role in physics and chemistry and usually has an accurately known value
  • fundamental particle — elementary particle.
  • fundamental research — research carried out to deepen understanding of the fundamental or basic principles of something
  • fundamental sequence — an infinite sequence, x 1 , x 2 , …, whose terms are points in Ek, in which there exists a point y such that the limit as n goes to infinity of xn = y if and only if for every ε>0, there exists a number N such that i > N and j > N implies | xi − xj |< ε. Also called Cauchy sequence, convergent sequence. Compare complete (def 10b).
  • gastroduodenostomies — Plural form of gastroduodenostomy.
  • general headquarters — the headquarters of the commanding officer of a large military force. Abbreviation: GHQ, G.H.Q.
  • genetically modified — biologically altered
  • get ahold of oneself — If you get ahold of yourself, you force yourself to become calm and sensible after a shock or in a difficult situation.
  • go to someone's head — to confuse, excite, or intoxicate someone
  • grand right and left — a figure called in square dancing in which partners face each other, forming a small circle, and then advance around the circle by extending alternating right and left hands to pull past each new person until they reach their partners again.
  • grand unified theory — a possible future quantum field theory that would encompass both the electroweak theory and quantum chromodynamics. Abbreviation: GUT.
  • gravitational radius — Schwarzschild radius.
  • great dividing range — a mountain range extending along the E coast of Australia: vast watershed region. 100 to 200 miles (160–320 km) wide.
  • great northern diver — a large northern bird, Gavia immer, with a black-and-white chequered back and a black head and neck in summer: family Gaviidae (divers)
  • great-great-grandson — the grandson of a grandchild
  • greatest lower bound — a lower bound that is greater than or equal to all the lower bounds of a given set: 1 is the greatest lower bound of the set consisting of 1, 2, 3. Abbreviation: glb.
  • guided visualization — a relaxation technique in which words, sounds, etc., are used to evoke positive mental images, feelings, and thoughts.
  • happy hunting ground — the North American Indian heaven, conceived of as a paradise of hunting and feasting for warriors and hunters.
  • hard gelatin capsule — A hard gelatin capsule is a type of capsule that is usually used to contain medicine in the form of dry powder or very small pellets.
  • hawaii-standard-time — Alaska-Hawaii time.
  • heat of condensation — the heat liberated by a unit mass of gas at its boiling point as it condenses to a liquid: equal to the heat of vaporization.
  • helmeted guinea fowl — the common guinea fowl in its wild state.
  • heston and isleworth — a former borough, now part of Hounslow, in SE England, near London.
  • hexadecimal notation — a number system having a base 16; the symbols for the numbers 0–9 are the same as those used in the decimal system, and the numbers 10–15 are usually represented by the letters A–F. The system is used as a convenient way of representing the internal binary code of a computer
  • hit-and-run accident — a motor-vehicle accident in which the driver leaves the scene without stopping to give assistance, inform the police, etc
  • horizontal microcode — (processor)   Microcode using horizontal encoding.
  • horizontally opposed — A horizontally opposed engine has the cylinders set horizontally at either side of the crankshaft.
  • hospitality industry — the hotel and accommodation industry
  • 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.
  • hudson's bay blanket — a woollen blanket with wide stripes
  • huntington's disease — a hereditary disease of the central nervous system characterized by brain deterioration and loss of control over voluntary movements, the symptoms usually appearing in the fourth decade of life.
  • hydraulic fracturing — a process in which fractures in rocks below the earth's surface are opened and widened by injecting chemicals and liquids at high pressure: used especially to extract natural gas or oil.
  • hydrodesulfurization — desulfurization by catalytic agents of the sulfur-rich hydrocarbons obtained from petroleum or the like during cracking or hydrocracking.
  • hyperadrenocorticism — Cushing's syndrome.
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