20-letter words containing d, a, i
- townsend's solitaire — a brownish, slender-billed songbird, Myadestes townsendi, of western North America.
- track-train dynamics — the interaction between the track and a moving train.
- traditional marriage — Anthropology. the primary established form of marriage recognized in a given country or religious or social group at a given time: In that culture, traditional marriage requires the families of the future bride and groom to engage in ritual visits and exchange gifts.
- traditional medicine — systems of medicine developed before the era of modern medicine, based on cultural beliefs and practices handed down from generation to generation
- trailing vortex drag — drag arising from vortices that occur behind a body moving through a gas or liquid
- transcendental logic — (in Kantian epistemology) the study of the mind with reference to its perceptions of external objects and to the objective truth of such perceptions.
- transmission density — a measure of the extent to which a substance transmits light or other electromagnetic radiation, equal to the logarithm to base ten of the reciprocal of the transmittance
- tribromoacetaldehyde — bromal.
- trichloroacetic acid — a toxic, deliquescent, and colorless crystalline compound, C 2 HCl 3 O 2 , soluble in water, alcohol, and ether: used in the synthesis of pharmaceuticals, herbicides, and other chemicals, and as a reagent for the detection of albumin. Abbreviation: TCA.
- triphenylmethane dye — any of a great number of dyes, as gentian violet, fuchsin, and rosaniline, produced from triphenylmethane by replacement of the ring hydrogen atoms with hydroxy, amino, sulfo, or other atoms or groups.
- troilus and cressida — a satiric comedy (1598–1602?) by Shakespeare.
- tropical disturbance — a very weak, or incipient, tropical cyclone.
- tubing head pressure — The tubing head pressure is the pressure on the tubing, which is measured at the wellhead.
- twisted stomach worm — stomach worm.
- uncertificated share — a share of a mutual fund credited to the account of a shareholder without the physical issuance of a certificate evidencing ownership.
- underground railroad — Also called underground railway. a railroad running through a continuous tunnel, as under city streets; subway.
- unified screw thread — a screw thread system introduced for defence equipment (1939–44), in which the thread form and pitch were a compromise between British Standard Whitworth and American Standard Sellers: adopted by the International Standards Organization
- united arab emirates — group of Arabian states
- united arab republic — a name given the union of Egypt and Syria from 1958 to 1961; after that, the official name of Egypt alone until 1971. Abbreviation: U.A.R.
- university education — a course of study undertaken and completed at a university
- university of durham — (body, education) A busy research and teaching community in the historic cathedral city of Durham, UK (population 61000). Its work covers key branches of science and technology and traditional areas of scholarship. Durham graduates are in great demand among employers and the University helps to attract investment into the region. It provides training, short courses, and expertise for industry. Through its cultural events, conferences, tourist business and as a major employer, the University contributes in a wide social and economic sense to the community. Founded in 1832, the University developed in Durham and Newcastle until 1963 when the independent University of Newcastle upon Tyne came into being. Durham is a collegiate body, with 14 Colleges or Societies which are a social and domestic focus for students. In 1992, the Universities of Durham and Teesside launched University College, Stockton-on-Tees, which has 190 students in the first year.
- unsaddling enclosure — the area at a racecourse where horses are unsaddled after a race and often where awards are given to owners, trainers, and jockeys
- uranium hexafluoride — a colorless, water-insoluble, crystalline, volatile solid, UF 6 , used in its gaseous state in separating uranium 235 from uranium.
- valve-in-head engine — I-head engine.
- vertical divestiture — the disposal of some or all the subsidiaries that make up a company's vertical combination through voluntary sale or legal compulsion.
- vertical lift bridge — lift bridge.
- video graphics array — (hardware) (VGA) A display standard for IBM PCs, with 640 x 480 pixels in 16 colours and a 4:3 aspect ratio. There is also a text mode with 720 x 400 pixels. IBM technical references define the *product name* of their original VGA display board as "Video Graphics Array", in contrast to the preceding boards, the "Color Graphics Adapter" (CGA) and "Enhanced Graphics Adapter" (EGA). See also Super Video Graphics Adapter.
- visual merchandising — Visual merchandising is the use of attractive displays and floor plans to increase customer numbers and sales volumes.
- visually handicapped — unable to carry out normal activities because of defects of vision, including blindness
- vitoria de conquista — a city in Bahía state, E central Brazil.
- vocational education — educational training that provides practical experience in a particular occupational field, as agriculture, home economics, or industry.
- voice over broadband — a transmission technique that enables a user to make and receive telephone calls over a broadband connection
- wait-and-see tactics — methods of achieving what you want in a particular political situation that involve biding your time for events to run their course
- walking-around money — money that is carried on the person for routine expenses and minor emergencies; pocket money.
- walton and weybridge — a city in Surrey, SE England: a London suburb.
- war production board — the board (1942–45) that supervised and regulated the production and sale of matériel essential to the logistics of World War II. Abbreviation: WPB, W.P.B.
- wardrobe malfunction — an embarrassing situation caused by the clothes a person is wearing
- webster's dictionary — Informal. a dictionary of the English language, especially American English, such as Dictionary.com.
- weights and measures — units or standards of measurement
- western india states — a former association of states in W India, largely on Kathiawar Peninsula.
- what did you do with — You can ask someone what they did with something as another way of asking them where they put it.
- wheeling and dealing — the use of different methods and contacts, often dishonestly, to achieve one's ends
- white-lipped peccary — a piglike artiodactyl mammal, Tayassu albirostris, of forests of southern North America, Central and South America: family Tayassuidae
- wide-angle converter — a person or thing that converts.
- william westmoreland — William Childs [chahyldz] /tʃaɪldz/ (Show IPA), 1914–2005, U.S. army officer: commander of U.S. forces in Vietnam and Thailand 1964–68.
- wilson cloud chamber — cloud chamber.
- with all due respect — despite my regard for you
- woolsorters' disease — pulmonary anthrax in humans, caused by inhaling the spores of Bacillus anthracis, which may contaminate wool fleece.
- working-capital fund — a fund established to finance operating activities in an industrial enterprise.
- write-once read-many — (storage) (WORM) Any type of storage medium to which data can be written to only a single time, but can be read from any number of times. Typically this is an optical disk whose surface is permanently etched using a laser in order to record information. WORM media have a significantly longer shelf life than magnetic media and thus are used when data must be preserved for a long time.