Webster’s Revised Unabridged Dictionary · 1913
Usnic
Us′nic (ŭs′nĭk), a. (Chem.) Pertaining to, or designating, a complex acid obtained, as a yellow crystalline substance, from certain genera of lichens (Usnea, Parmelia, etc.).
Webster’s Revised Unabridged Dictionary · 1913
Us′nic (ŭs′nĭk), a. (Chem.) Pertaining to, or designating, a complex acid obtained, as a yellow crystalline substance, from certain genera of lichens (Usnea, Parmelia, etc.).