n. [ NL. quina nova the tree Cosmibuena magnifolia, whose bark yields quinovin. ] (Chem.) An amorphous bitter glucoside derived from cinchona and other barks. Called also
n. See Quintain. [ 1913 Webster ]
n. [ L. quintus the fifth: cf. F. quintine. ] (Bot.) The embryonic sac of an ovule, sometimes regarded as an innermost fifth integument. Cf. Quartine, and Tercine. [ 1913 Webster ]