20-letter words containing a, d, u
- 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
- 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.
- guided visualization — a relaxation technique in which words, sounds, etc., are used to evoke positive mental images, feelings, and thoughts.
- guillaume de machaut — Guillaume de [French gee-yohm duh] /French giˈyoʊm də/ (Show IPA), Guillaume de Machaut.
- 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.
- harvard architecture — (architecture) A computer architecture in which program instructions are stored in different memory from data. Each type of memory is accessed via a separate bus, allowing instructions and data to be fetched in parallel. Contrast: von Neumann architecture.
- helmeted guinea fowl — the common guinea fowl in its wild state.
- hindu-arabic numeral — Arabic numeral.
- hit-and-run accident — a motor-vehicle accident in which the driver leaves the scene without stopping to give assistance, inform the police, etc
- 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.
- household appliances — devices or machines, usually electrical, that are in your home and which you use to do jobs such as cleaning or cooking
- hudson's bay blanket — a woollen blanket with wide stripes
- hudson's bay company — a company chartered in England in 1670 to carry on fur trading with the Indians in North America.
- 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.
- hurricane-force wind — a wind, not necessarily a hurricane, having a speed of more than 72 miles per hour (32 m/sec): the strongest of the winds.
- 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.
- 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.
- hypophosphorous acid — a colorless or yellowish, water-soluble, liquid, monobasic acid, H 3 PO 2 , having a sour odor, and used as a reducing agent.
- ideal of pure reason — God, seen as an idea of pure reason unifying the personal soul with the cosmos.
- imported currantworm — the larva of any of several insects, as a sawfly, Nematus ribesii (imported currantworm) which infests and feeds on the leaves and fruit of currants.
- in bad circumstances — (of a person) in a bad financial situation
- in the public domain — able to be discussed and examined freely by the general public
- in-service education — training and education given to employed teachers throughout their career
- indian cucumber root — a North American plant, Medeola virginiana, of the lily family, having whorled leaves, nodding, greenish-yellow flowers, and an edible root.
- indistinguishability — The state of being indistinguishable.
- inductive statistics — the branch of statistics dealing with conclusions, generalizations, predictions, and estimations based on data from samples.
- industrial democracy — control of an organization by the people who work for it, esp by workers holding positions on its board of directors
- industrial espionage — the stealing of technological or commercial research data, blueprints, plans, etc., as by a person in the hire of a competing company.
- industrial insurance — industrial life insurance.
- industrial relations — (used with a plural verb) the dealings or relations of an industrial concern with its employees, with labor in general, with the public, etc.
- industrial sociology — the sociological study of social relationships and social structures in business settings.
- information builders — Distributors of LEVEL5 OBJECT. Telephone +1 800 969 INFO.
- information industry — businesses that involve collecting and using information
- inland revenue stamp — a certificate issued by the Inland Revenue to acknowledge payment of tax
- intestinal fortitude — courage; resoluteness; endurance; guts: to have intestinal fortitude.
- intravenous drug use — the injection of drugs intravenously
- inventory adjustment — Inventory adjustments are increases or decreases made in inventory to account for theft, loss, breakages, and errors in the amount or number of items received.
- jacopo della quercia — Jacopo Della [yah-kaw-paw del-lah] /ˈyɑ kɔ pɔ ˌdɛl lɑ/ (Show IPA), 1374?–1438, Italian sculptor.
- jordan curve theorem — the theorem that the complement of a simple closed curve can be expressed as the union of two disjoint sets, each having as boundary the given curve.
- judicial proceedings — any action involving or carried out by a court of law
- juno and the paycock — a play (1924) by Sean O'Casey.
- justifiable homicide — murder committed under extenuating circumstances
- keyboard video mouse — (hardware) (KVM) Used to describe a "KVM switch" that allows one keyboard, one video display and one mouse to be switched between two or more computers.