19-letter words containing m, i, d, l
- velocity modulation — the modulation in velocity of a beam of electrons or ions caused by passing the beam through a high-frequency electric field, as in a cavity resonator
- wade-giles (system) — a system for transliterating Chinese ideograms into the Latin alphabet, in wide use esp. before Pinyin was adopted by the People's Republic of China in 1979
- wesleyan methodists — a branch of the Methodist Church in its original form
- wide-angle glaucoma — open-angle glaucoma. See under glaucoma.
- william howard taft — Helen Herron [her-uh n] /ˈhɛr ən/ (Show IPA), 1861–1943, U.S. First Lady 1909–13 (wife of William Howard Taft).
- withdrawal symptoms — When someone has withdrawal symptoms, they feel ill after they have stopped taking a drug which they were addicted to.
- withdrawal syndrome — a spectrum of physical and behavioral symptoms following cessation from the continuous use of an addictive drug, the character and severity of the symptoms depending upon the particular drug and the daily dose.
- world wide web worm — (web) (WWWW) One of the first automatic indexing tools for the web, being developed in September 1994 by Oliver McBryan <[email protected]> at the University of Colorado. The worm created a database of 300,000 multimedia objects which can be obtained or searched for keywords via the web.