methide

noun
meth·​ide | \ˈmeˌthīd\
plural -s

Definition of methide 

1 : a binary compound of methyl usually with a metal mercuric methide Hg(CH3)2

2 : a compound that contains a methylene group as part of a quinonoid structure and that is formed as an intermediate in the condensation of a phenol and formaldehyde to yield a resin quinone methide O=C6H4=CH2

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History and Etymology for methide

meth- + -ide

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