Function: noun
Date: 1869
: a crystalline compound OsO 4 that is an oxide of osmium, has a poisonous irritating vapor, and is used as a catalyst, oxidizing agent, and biological fixative and stain
OSMIUM TETROXIDE
Meaning of OSMIUM TETROXIDE in English
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012