23-letter words containing a, n, o, d, y, e
- quantum electrodynamics — the quantum field theory that deals with the electromagnetic field and its interaction with electrons and positrons. Abbreviation: QED.
- real simple syndication — (spelling) Illiterate form of Really Simple Syndication.
- refinery waste disposal — Refinery waste disposal is the system for dealing with waste materials, especially hazardous ones, in a refinery.
- relativity of knowledge — the theory that all knowledge is relative to the mind, or that things can be known only through their effects on the mind, and that consequently there can be no knowledge of reality as it is in itself
- secondary modern school — (formerly) a secondary school offering a more technical or practical and less academic education than a grammar school
- secondary seventh chord — a chord formed by superposition of three thirds upon any degree of the scale except the dominant.
- secondary sex character — any of a number of manifestations, as development of breasts or beard, muscularity, distribution of fat tissue, and change of pitch in voice, specific to each sex and incipient at puberty but not essential to reproduction.
- security association id — (networking) (SAID) A 32-bit field added to packet headers for encryption and authentication in the proposed Internet Protocol Version 6.
- state coordinate system — a system of right-angled planar coordinates established by the U.S. Coast and Geodetic Survey for each state in the United States.
- take sth in your stride — In British English, if you take a problem or difficulty in your stride, you deal with it calmly and easily. The American expression is take something in stride.
- the whys and wherefores — The whys and wherefores of something are the reasons for it.
- to be at your wit's end — If you say that you are at your wits' end, you are emphasizing that you are so worried and exhausted by problems or difficulties that you do not know what to do next.
- to come to a sticky end — If someone comes to a sticky end or meets a sticky end, they suffer very badly or die in an unpleasant way.
- to have your hands full — If you have your hands full with something, you are very busy because of it.
- twenty-fourth amendment — an amendment to the U.S. Constitution, ratified in 1964, forbidding the use of the poll tax as a requirement for voting in national or U.S. Congressional elections.
- twenty-second amendment — an amendment to the U.S. Constitution, ratified in 1951, limiting presidential terms to two for any one person, or to one elected term if the person has completed more than two years of another's term.
- under a gooseberry bush — used humorously in answering children's questions regarding their birth
- urea-formaldehyde resin — any of a group of resins formed by the interaction of urea and formaldehyde under conditions that include heat and pH control: used chiefly in the manufacture of buttons, baking enamels, and for making fabrics wrinkle-resistant.
- wholly-owned subsidiary — A wholly-owned subsidiary is a company whose shares are all owned by another company.