20-letter words containing a, c, h, g
- quantum cryptography — a method of coding information based on quantum mechanics, which is said to be unbreakable
- quarantine anchorage — an anchorage for ships awaiting a pratique.
- repurchase agreement — a contract between a dealer, as a bank, and an investor, whereby the investor purchases securities with the promise that they will be bought back by the dealer on a designated date, for which the investor receives a fixed return.
- ring-necked pheasant — a gallinaceous Asian bird, Phasianus colchicus, having a white band around its neck, introduced into Great Britain, North America, and the Hawaiian Islands.
- sarcastic fringehead — any fish of the genus Neoclinus, characterized by a row of fleshy processes on the head, as N. blanchardi (sarcastic fringehead) of California coastal waters.
- scatter site housing — public housing, especially for low-income families, built throughout an urban area rather than being concentrated in a single neighborhood.
- scavenger's daughter — an instrument of torture that doubled over and squeezed the body so strongly and violently that blood was brought forth from the ears and nose: invented in 16th-century England.
- schrodinger equation — the wave equation of nonrelativistic quantum mechanics. Also called Schrödinger wave equation. Compare wave equation (def 2).
- semiautobiographical — pertaining to or being a fictionalized account of an author's own life.
- sex change operation — a surgical operation designed to change a person's physical sexual characteristics to those of the opposite sex
- shifting cultivation — a land-use system, esp in tropical Africa, in which a tract of land is cultivated until its fertility diminishes, when it is abandoned until this is restored naturally
- skating championship — a competition for ice-skating
- spatial technologies — (company) Distributors of the ACIS solid modelling engine.
- st. george's channel — a channel between Wales and Ireland, connecting the Irish Sea and the Atlantic. 100 miles (160 km) long; 50–90 miles (81–145 km) wide.
- straight-cut tobacco — tobacco that is cut in such a way that it will lie flat.
- synchronized skating — the art or sport of teams of up to twenty skaters holding onto each other and moving in patterns in time to music
- technology agreement — a framework designed by trade unions for negotiating changes in employment caused by the introduction of new technology
- the grove of academe — the academic world
- the high renaissance — the period from about the 1490s to the 1520s in painting, sculpture, and architecture in Europe, esp in Italy, when the Renaissance ideals were considered to have been attained through the mastery of Leonardo, Michelangelo, and Raphael
- thought transference — transference of thought by extrasensory means from the mind of one individual to another; telepathy.
- to reach new heights — to become higher than ever before
- track-laying vehicle — A track-laying vehicle is a vehicle whose wheels run inside a continuous chain or track.
- 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.
- your marching orders — If you give someone their marching orders, you tell them that you no longer want or need them, for example as your employee or as your lover.