20-letter words containing w, c, d
- ruby-crowned kinglet — an olive-gray, American kinglet, Regulus calendula, the male of which has an erectile, ruby crest.
- saint andrew's cross — a low evergreen shrub, Ascyrum hypericoides, native to temperate and subtropical America, having flowers in clusters of three: often cultivated.
- schwarzschild radius — the radius at which a gravitationally collapsing celestial body becomes a black hole.
- schwarzschild sphere — the sphere which surrounds a non-rotating uncharged black hole, from within which no information can escape because of gravitational forces
- second law of motion — any of three laws of classical mechanics, either the law that a body remains at rest or in motion with a constant velocity unless an external force acts on the body (first law of motion) the law that the sum of the forces acting on a body is equal to the product of the mass of the body and the acceleration produced by the forces, with motion in the direction of the resultant of the forces (second law of motion) or the law that for every force acting on a body, the body exerts a force having equal magnitude and the opposite direction along the same line of action as the original force (third law of motion or law of action and reaction)
- sellers screw thread — a thread form in a system of standard sizes proposed by Sellers in 1884 and later accepted as standard in the USA, having a 60° flank angle with a flat top and foot
- swan's neck pediment — a broken pediment, the outline of which consists of a pair of S -curves tangent to the cornice level at the ends of the pediment, rising to a pair of scrolls on either side of the center, where a finial often rises between the scrolls.
- switchboard operator — a person who operates an installation in a telephone exchange, office, hotel, etc, at which the interconnection of telephone lines is manually controlled
- the luck of the draw — If you say that something is the luck of the draw, you mean that it is the result of chance and you cannot do anything about it.
- to blow hot and cold — If someone blows hot and cold, they keep changing their attitude towards something, sometimes being very enthusiastic and at other times expressing no interest at all.
- twisted stomach worm — stomach worm.
- 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
- van der waals forces — weak electrostatic forces between atoms and molecules caused by transient distortions in the distribution of electrons in the interacting atoms or molecules
- 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
- 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.
- weston standard cell — a primary cell used as a standard of emf, producing 1.018636 volts: consists of a mercury anode and a cadmium amalgam cathode in an electrolyte of saturated cadmium sulphate
- 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.
- wilson cloud chamber — cloud chamber.
- winsoft products ltd — (company) The company which produces EMBLA Pro. E-mail: WinSoft Products Ltd <[email protected]>
- winter of discontent — the winter of 1978–1979, during which numerous strikes, esp by local authority workers, took place against a background of a government pay freeze
- with all due respect — despite my regard for you
- without prejudice to — If you take an action without prejudice to an existing situation, your action does not change or harm that situation.
- 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.
- yellow-billed cuckoo — a North American cuckoo, Coccyzus americanus, that has a yellow bill and, unlike many cuckoos, constructs its own nest and rears its own young.
- yellow-breasted chat — an American warbler, Icteria virens, having a yellow throat and breast and greenish-brown upper parts and noted for imitating the songs of other species.