osmic compound

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• osmic acid — noun Chemistry a solution of osmium tetroxide, a poisonous yellow compound used as a biological stain. Origin C19: osmic from osmium + ic …   English new terms dictionary

• osmous — [äz′məs, äs′məs] adj. designating or of chemical compounds in which osmium has a lower valence than in the corresponding osmic compounds * * * os·mous (ŏzʹməs) also os·mi·ous ( mē əs) adj. Of, relating to, or containing osmium in a compound with… …   Universalium

• osmium tetroxide — osmic acid a colourless or faintly yellowish compound used to stain fats or as a fixative in the preparation of tissues for microscopical study. Osmium tetroxide evaporates readily, the vapour having a toxic action on the eyes, skin, and… …   The new mediacal dictionary

• stain — 1. To discolor. 2. To color; to dye. 3. A discoloration. 4. A dye used in histologic and bacteriologic technique. 5. A procedure in which a dye or combination of dyes and reagents is used to color the constituents of cells and tissues. For… …   Medical dictionary

• osmium tetroxide — n a crystalline compound OsO4 that is an oxide of osmium, has a poisonous irritating vapor, and is used chiefly as a catalyst, as an oxidizing and hydroxylating agent (as in the conversion of alkenes to glycols), and as a biological fixative and… …   Medical dictionary

• Osmium tetroxide — Osmium tetroxide …   Wikipedia

• osmiumtetroxide — osmium tetroxide n. A poisonous compound, OsO4, with a pungent smell, used in solution to stain and fix biological material, especially lipids. Also called osmic acid. * * * …   Universalium

• osmium tetroxide — Chem. a crystalline or amorphous, colorless, poisonous compound, OsO4, soluble in water, alcohol, and ether: used for microscopic staining, in photography, and as a catalyst in organic synthesis. Also called osmic acid. [1875 80] * * * …   Universalium