osmium tetroxide
noun
Definitions
An oxide of the metal osmium, OsO4; it is very poisonous, has a pungent smell and can cause blindness; it is a powerful oxidizing agent, and is used to stain biological materials.
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Definitions
An oxide of the metal osmium, OsO4; it is very poisonous, has a pungent smell and can cause blindness; it is a powerful oxidizing agent, and is used to stain biological materials.