Usnic-acid
noun, Pharmacology.
1.
an antibacterial substance, C 18 H 16 O 7 , derived from lichens of the genus Usnea.
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1. United States Pharmacopeia. abbreviation 1. unique selling proposition or unique selling point: a characteristic of a product that can be used in advertising to differentiate it from its competitors U.S.P. or USP abbr. United States Pharmacopoeia unique sales point USP United States Pharmacopoeia
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1. United States Pharmacopeia. U.S.P. or USP abbr. United States Pharmacopoeia