20-letter words containing d, a, s, l
- 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
- 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.
- 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.