20-letter words containing u, s, r, d
- controlled substance — a drug regulated by the Federal Controlled Substances Acts, including opiates, depressants, stimulants, and hallucinogens
- counterdemonstration — a demonstration that is held in reaction to another demonstration
- crime and punishment — a novel (1866) by Feodor Dostoevsky.
- cycloidal propulsion — propulsion of a vessel by propellers of controllable pitch that steer as well as propel.
- deoxyribonucleotides — Plural form of deoxyribonucleotide.
- differential housing — the casing that houses the differential of a motor vehicle
- digital service unit — data service unit
- directory user agent — (DUA) The software that accesses the X.500 Directory Service on behalf of the directory user. The directory user may be a person or another software element.
- disability insurance — insurance providing income to a policyholder who is disabled and cannot work.
- displacement current — the rate of change, at any point in space, of electric displacement with time.
- disruptive discharge — the sudden, large increase in current through an insulating medium resulting from complete failure of the medium under electrostatic stress.
- distributed database — A collection of several different databases that looks like a single database to the user. An example is the Internet Domain Name System (DNS).
- distributed practice — learning with reasonably long intervals between separate occasions of learning
- distribution channel — trade: retailer
- 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
- double-aspect theory — a monistic theory that holds that mind and body are not distinct substances but merely different aspects of a single substance
- 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.
- 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.
- electoral boundaries — the way that a country or area is divided for the purposes of voting in an election
- epidural anaesthesia — numbing injection in the spine
- 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
- 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
- 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 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 under one's skin — the external covering or integument of an animal body, especially when soft and flexible.
- 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.
- 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
- 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.
- 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.
- holder in due course — a person who has received a negotiable instrument in good faith and without notice that it is overdue, that there is any prior claim, or that there is a defect in the title of the person who negotiated it.
- hospitality industry — the hotel and accommodation industry
- hydraulic suspension — a system of motor-vehicle suspension using hydraulic members, often with hydraulic compensation between front and rear systems (hydroelastic suspension)
- hydrodesulfurization — desulfurization by catalytic agents of the sulfur-rich hydrocarbons obtained from petroleum or the like during cracking or hydrocracking.
- hydrostatic pressure — Hydrostatic pressure is the pressure exerted by a liquid that depends on how deep it is.