grignard-reagent

Grignard reagent

noun Chemistry.
any of the group of reagents produced by the interaction of magnesium and an organic halide, usually in the presence of an ether, and having the general formula RMgX, where R is an organic group and X is a halogen: used in the Grignard reaction.

Origin:
1900–05; see V. Grignard

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Grignard reagent (ˈɡriːnjɑː, French ɡriɲar) [Click for IPA pronunciation guide]
 
n
chem 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
 
[C20: named after Victor Grignard (1871--1934), French chemist]

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Grignard-reagent is always a great word to know.
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a stew of meat, vegetables, potatoes, etc.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
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