Lū'pu-līne, n.

n. [Fr. lupuline, N. Lat. lupulinum, lupulina, from lupulus, diminutive of Lat. lupus, hop, hops.] 1. (Chem.) The bitter principle of hops. 2. The fine yellow powder of hops, which contains that principle. This powder consists of little round glands, which are found upon the stipules and fruit. It is obtained by drying, heating, and then sifting the hops. It is largely used in medicine in place of the hops.