məˈlōnik-, -länik- noun
Etymology: malonic from F. malonique (in acide malonique malonic acid), alteration of malique malic (in acide malique malic acid) — more at malic acid
: a crystalline dicarboxylic acid CH 2 (COOH) 2 obtained by oxidation of malic acid but usually made by hydrolysis of cyanoacetic acid and used especially in the form of its diethyl ester in organic synthesis (as of barbiturates and vitamins of the B complex)