a. [ L. ulmus an elm. ] (Bot.) Of or pertaining to a suborder of urticaceous plants, of which the elm is the type. [ 1913 Webster ]
n. (Chem.) A salt of ulmic acid. [ 1913 Webster ]
a. [ L. ulmus an elm: cf. F. ulmique. ] (Chem.) Pertaining to ulmin; designating an acid obtained from ulmin. [ 1913 Webster ]
n. [ L. ulmus an elm: cf. F. ulmine. ] (Chem.) A brown amorphous substance found in decaying vegetation. Cf. Humin.
‖n. [ L., an elm. ] (Bot.) A genus of trees including the elm. [ 1913 Webster ]