a. [ Gr. &unr_; bitter. ] (Chem.) Pertaining to, or designating, a strong organic acid (called picric acid), intensely bitter. [ 1913 Webster ]
☞ Picric acid is obtained by treating phenol with strong nitric acid, as a brilliant yellow crystalline substance,
n. [ From Gr. &unr_; bitter. ] (Min.) A dark green igneous rock, consisting largely of chrysolite, with hornblende, augite, biotite, etc. [ 1913 Webster ]