20-letter words containing d, r, u
- distributive lattice — (theory) A lattice for which the least upper bound (lub) and greatest lower bound (glb) operators distribute over one another so that a lub (b glb c) == (a lub c) glb (a lub b) and vice versa. ("lub" and "glb" are written in LateX as \sqcup and \sqcap).
- district court judge — a judge presiding over a lower court
- 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.
- diverticular disease — any disease of the colon involving the presence of diverticula
- doctor of the church — a title conferred on an ecclesiastic for great learning and saintliness.
- documentary evidence — law: written
- double fertilization — the fertilization process characteristic of flowering plants, in which one sperm cell of a pollen grain fertilizes an egg cell while a second fuses with two polar nuclei to produce a triploid body that gives rise to the endosperm.
- 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).
- drug delivery system — A drug delivery system is a system that is used as a medium or carrier for administering a pharmaceutical product to a patient.
- drum and bugle corps — a marching band of drum players and buglers.
- drunk and disorderly — If someone is charged with being drunk and disorderly, they are charged with being drunk and behaving in a noisy, offensive, or violent way in public.
- drunk mouse syndrome — (Also "mouse on drugs") A malady exhibited by the mouse pointing device of some computers. The typical symptom is for the mouse cursor on the screen to move in random directions and not in sync with the motion of the actual mouse. Can usually be corrected by unplugging the mouse and plugging it back again. Another recommended fix for optical mice is to rotate your mouse mat 90 degrees. At Xerox PARC in the 1970s, most people kept a can of copier cleaner (isopropyl alcohol) at their desks. When the steel ball on the mouse had picked up enough cruft to be unreliable, the mouse was doused in cleaner, which restored it for a while. However, this operation left a fine residue that accelerated the accumulation of cruft, so the dousings became more and more frequent. Finally, the mouse was declared "alcoholic" and sent to the clinic to be dried out in a CFC ultrasonic bath.
- dry-bulb temperature — A dry-bulb temperature is the temperature of a dry surface in a vapor-gas environment.
- dry-bulb thermometer — a thermometer having a dry bulb: used in conjunction with a wet-bulb thermometer in a psychrometer.
- duck-billed dinosaur — hadrosaur.
- due process (of law) — the course of legal proceedings established by the legal system of a nation or state to protect individual rights
- dun & bradstreet — an agency furnishing subscribers with information as to the financial standing and credit rating of businesses
- early sunday morning — a painting (1930) by Edward Hopper.
- education department — the department of a local authority that is concerned with education, or the government department concerned with education
- electoral boundaries — the way that a country or area is divided for the purposes of voting in an election
- elementary education — the first six to eight years of a child's education
- epidural anaesthesia — numbing injection in the spine
- equity of redemption — the right that a mortgager has in equity to redeem his property on payment of the sum owing, even though the sum is overdue
- equivalent air speed — the speed at sea level that would produce the same Pitot-static tube reading as that measured at altitude
- estrela mountain dog — a sturdy well-built dog of a Portuguese breed with a long thick coat and a thick tuft of hair round the neck, often used as a guard dog
- european social fund — one of the four Structural Funds of the European Union which aims to support employment and the economic and social well-being of EU member countries
- factor of production — any instrument, agent, etc., employed in the production of goods and services.
- federal constitution — Constitution of the United States.
- fold-and-thrust belt — a linear or arcuate region of the earth's surface that has been subjected to severe folding and thrust faulting
- fondue bourguignonne — a dish consisting of pieces of steak impaled on forks, cooked in oil at the table and dipped in sauces
- 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.
- friedrich max müller — Friedrich Max [free-drik maks;; German free-drikh mahks] /ˈfri drɪk mæks;; German ˈfri drɪx mɑks/ (Show IPA), 1823–1900, English Sanskrit scholar and philologist born in Germany.
- fuming sulfuric acid — an oily, hygroscopic, corrosive liquid, H 2 S 2 O 7 , that, depending on purity, is colorless or dark brown: used chiefly as a dehydrating agent in the manufacture of explosives and as a sulfating or sulfonating agent in the manufacture of dyes.
- fundamental particle — elementary particle.
- fundamental research — research carried out to deepen understanding of the fundamental or basic principles of something
- gastroduodenostomies — Plural form of gastroduodenostomy.
- general headquarters — the headquarters of the commanding officer of a large military force. Abbreviation: GHQ, G.H.Q.
- get away with murder — Law. the killing of another human being under conditions specifically covered in law. In the U.S., special statutory definitions include murder committed with malice aforethought, characterized by deliberation or premeditation or occurring during the commission of another serious crime, as robbery or arson (first-degree murder) and murder by intent but without deliberation or premeditation (second-degree murder)
- get under one's skin — the external covering or integument of an animal body, especially when soft and flexible.
- gill-over-the-ground — ground ivy.
- godefroy de bouillon — c1060–1100, French crusader.
- good driver discount — A good driver discount is a discount on insurance that is available to drivers who have no at-fault accidents and no traffic offenses during a particular period.
- 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.
- 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.
- grievous bodily harm — law: serious injury
- group code recording — (storage) (GCR) A recording method used for 6250 BPI magnetic tapes. GCR typically uses a group of five bits of code to represent four bits of data. The encoding ensures no more than two or three zeros occur in a row, and no more than eight or so ones occur in a row, where zeros represent an absense of magnetic change. GCR is also used on Commodore Business Machines diskette drives; the 4040, 8050, 154x, 157x and 158x series of 5.25" and 3.5" low and high density diskette drives used with 8-bit home computers circa 1977 to 1992. It was also supported on Amiga internal and external drives but only used for reading non-Amiga disks. Compare NRZI, PE.
- guarded horn clauses — (language) (GHC) A parallel dialect of Prolog by K. Ueda in which each clause has a guard. GHC is similar to Parlog. When several clauses match a goal, their guards are evaluated in parallel and the first clause whose guard is found to be true is used and others are rejected. It uses committed-choice nondeterminism. See also FGHC, KL1.