a crystalline or amorphous, colorless, poisonous compound, OsO 4 , soluble in water, alcohol, and ether: used for microscopic staining, in photography, and as a catalyst in organic synthesis.
a yellowish poisonous water-soluble crystalline substance with a penetrating odour, used as a reagent and catalyst in organic synthesis. Formula: OsO4
[oz-mee-uh m] /ˈɒz mi əm/ noun, Chemistry. 1. a hard, heavy, metallic element having the greatest density of the known elements and forming octavalent compounds, as OsO 4 and OsF 8 : used chiefly as a catalyst, in alloys, and in the manufacture of electric-light filaments. Symbol: Os; atomic weight: 190.2; atomic number: 76; specific […]
1. a combining form representing osmosis, in compound words: osmoregulation. osmo- 1 or osm- pref. Smell; odor: osmidrosis. osmo- 2 or osm- pref. Osmosis: osmolarity.
osmolality os·mo·lal·i·ty (ŏz’mō-lāl’ĭ-tē, ŏs’-) n. The concentration of an osmotic solution, usually expressed in terms of osmoles.
osmolarity os·mo·lar·i·ty (ŏz’mō-lār’ĭ-tē, ŏs’-) n. The osmotic concentration of a solution expressed as osmoles of solute per liter of solution.