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lunitidal interval
lunker
lunkhead
lunula
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Luoyang
lupine (1)
lupine (2)
lupulin
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lupus anticoagulant
lupus erythematosus
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lupulin

lu·pu·lin [ lpyəlin ]


noun 
Definition:
 
bitter constituent of hops: a sticky yellow powder found in hop cones and containing the resins and essential oils that give beer its bitter taste. It was formerly used as a sedative.

[Early 19th century. < modern Latin lupulus< Latin, "hop plant," literally "little wolf" < lupus "wolf"]
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