(a.) Pertaining to, or designating, a complex acid obtained, as a yellow crystalline substance, from certain genera of lichens (Usnea, Parmelia, etc.).
USNIC
Meaning of USNIC in English
Webster's English dictionary. Английский словарь Webster. 2012
(a.) Pertaining to, or designating, a complex acid obtained, as a yellow crystalline substance, from certain genera of lichens (Usnea, Parmelia, etc.).
Webster's English dictionary. Английский словарь Webster. 2012