any of a class of organometallic reagents, having the general formula RMgX, where R is an organic group and X is a halogen atom: used in the synthesis of organic compounds
Word origin
C20: named after Victor Grignard (1871–1934), French chemist
Grignard reagent in American English
(ˈgriˌnjɑrd)
any of a class of reagents with the general formula RMgX, in which R is an organicradical, esp. an alkyl or aryl, and X is a halogen: these reagents react with a great variety of compounds and are used in the synthesis of organic compounds