ˈshrāˌdan noun
( -s )
Etymology: Gerhard Schrad er b 1903 German chemist + English -an
: an almost odorless viscous liquid {[(CH 3 ) 2 N] 2 PO} 2 O made from phosphorus oxychloride, dimethylamine, and sodium ethoxide and used chiefly in emulsions as a systemic insecticide — called also octamethylpyrophosphoramide, OMPA