| osmic | <chemistry> Pertaining to, derived from, or containing, osmium; specifically, designating those compounds in which it has a valence higher than in other lower compounds; as, osmic oxide. Osmic acid. <chemistry> A white volatile crystalline substance, OsO4, the most stable and characteristic of the compounds of osmium. It has a burning taste, and gives off a vapor, which is a powerful irritant poison, violently attacking the eyes, and emitting a strong chlorinelike odour. Formerly improperly called osmic acid. Source: Websters Dictionary (01 Mar 1998) |
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| osmic acid | OsO4;a volatile caustic and strong oxidizing agent; colourless crystals, poorly soluble in water, but soluble in organic solvents; the aqueous solution is a fat and myelin stain and a general fixative for electron microscopy. Synonym: osmium tetroxide. (05 Mar 2000) |
| osmic acid fixative | A fixative used alone in buffer or as a postfixative after a glutaraldehyde fixative in electron microscopy; an excellent membrane fixative but a poor preservative of chromatin. (05 Mar 2000) |
| osmicate | To stain or fix with osmic acid. (05 Mar 2000) |
| osmication | Osmification The fixation of tissue with an osmic acid solution; also serves as a stain for both light and electron microscopy. (05 Mar 2000) |
| osmics | The science of olfaction. Origin: G. Osme, smell (05 Mar 2000) |