Glyoxime \Gly*ox"ime\, n. [Glyoxal + oxime.] (Chem.) A white, crystalline, nitrogenous substance, produced by the action of hydroxylamine on glyoxal, and belonging to the class of oximes; also, any one of a group of substances resembling glyoxime proper, and of which it is a type. See {Oxime}.