Definition of osmium tetroxide in English:

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osmium tetroxide

noun

A poisonous pale yellow solid with a distinctive pungent smell, used in solution as a biological stain (especially for lipids) and fixative.
  • Chemical formula: OsO4.
Example sentences
  • The tissue is then placed for 8 to 10 days in a solution containing potassium chlorate, osmium tetroxide, formaldehyde, and glacial acetic acid.
  • The cytoplasm of medullar cells, fixed in osmium tetroxide, stained more deeply with toluidine blue than that of cortical cells.
  • Experts say a bomb with the chemical osmium tetroxide would have wiped out the first police and rescue workers on the scene.

For editors and proofreaders

Syllabification: os·mi·um te·trox·ide

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