Also -ine. [f. mod.L. lupul-us hop + -IN.]
1. Small shining grains of a yellowish color found under the scales of the calyx of the hop, first described by Dr. Ives of New York (a 1822).
1826. Henry, Elem. Chem., II. 332. Lupulin. This name has been given by Dr. Ives … to an impalpable yellow powder, in which he believes the virtue of the hop to reside.
1870. Eng. Mech., 18 March, 651/3. A resinous waxy substance called ‘lupuline.’
2. The bitter aromatic principle contained in the hop; also called lupulite.
1839. Ure, Dict. Arts, etc., 92. Lupuline is neither acid nor alkaline.
1893. Leland, Mem., II. 221. I … substituted lupulin in the form of hops—that is to say, pale ale or ‘bitter.’
3. attrib.
1829. Togno & Durand, trans. Edwards & Vavasseur’s Man. Mat. Med., 144. Lupulin powder, F. M. (Lupulin, 1 part; sugar, 2 parts)…. Lupulin ointment, [etc.].
1839. Ure, Dict. Arts, 101. In tearing them [hops] asunder, some of the lupuline powder is apt to be lost.
Hence Lupulinic a., relating to LUPULIN; Lupulinous a. Bot. = LUPULINE a.
1845. Cooley, Cycl. Pract. Receipts (ed. 2), 571. Lupuline … may be obtained by treating the aqueous extract of the yellow powder or lupulinic grains of the strobiles, along with a little lime [etc.].
1866. Treas. Bot., Lupulinous, resembling a head of hops.
1876. Harley, Mat. Med. (ed. 6), 430. The lupulinic or hop glands.
1881. Whitehead, Hops, 59. Hops are … collections of imbricated scales, under which are yellowish, aromatic, lupulinic glands.
