Os"mic (?), a. Chem.
Pertaining to, derived from, or containing, osmium; specifically, designating those compounds in which it has a valence higher than in other lower compounds; as, osmic oxide.
Osmic acid. Chem. (a) Osmic tetroxide. [Obs.] (b) Osmic acid proper, an acid analogous to sulphuric acid, not known in the free state, but forming a well-known and stable series of salts (osmates), which were formerly improperly called osmites. -- Osmic tetroxide Chem., a white volatile crystalline substance, OsO4, the most stable and characteristic of the compounds of osmium. It has a burning taste, and gives off a vapor, which is a powerful irritant poison, violently attacking the eyes, and emitting a strong chlorinelike odor. Formerly improperly called osmic acid.
© Webster 1913.