
A yellow resinous powder found on the female hop cone that contains the bittering principle used in making beer.
Found on
http://brewdudes.wordpress.com/beer-making-terminology/

• (n.) The fine yellow resinous powder found upon the strobiles or fruit of hops, and containing this bitter principle. • (n.) A bitter principle extracted from hops.
Found on
http://thinkexist.com/dictionary/meaning/lupulin/
Lu'pu·lin noun [ Confer French
lupulin . See
Lupuline .]
1. (Chemistry) A bitter principle extracted from hops.
2. The fine yellow resinous powder found upon the strobiles or fruit of hops, and containing this bitter principle. [ Written also
lupuline .]
Found on
http://www.encyclo.co.uk/webster/L/70

The powdery, yellowish substance in female hop flowers containing the resins and essential oils that give hops their flavor, bitterness and aroma.
Found on
http://www.lehighvalleyhomebrewers.org/glossary.html

Type: Term Pronunciation: lū′pū-lin Definitions: 1. A sticky, yellowish, granular material consisting of entire multicellular glandular hairs (trichomes) from the fruit and bracts of the hop vine, Humulus lupulus; the essential oils and resins of these glandular hairs are responsible for the characteristic bitter taste of beer or me...
Found on
http://www.medilexicon.com/medicaldictionary.php?t=51521

Lupulin is the fine yellow powder of hops, which contains the bitter principle. It consists of little round glands, which are found upon the stipules and fruit, and is obtained by drying, heating, and then sifting the hops. It is largely used in medicine.
Found on
http://www.probertencyclopaedia.com/browse/BL.HTM

The fine, yellow, resinous powder on the strobile of hops.
Found on
http://www.winning-homebrew.com/brewing-terms.html

A yellow resinous powder found on the female hop cone that contains the bittering principle used in making beer.
Found on
https://www.encyclo.co.uk/local/21582

the glandular hairs of the hop, Humulus lupulus, formerly used in medicine as a sedative.
Found on
https://www.infoplease.com/dictionary/lupulin
No exact match found.