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tetroxide
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- Tetroxide - n. - An oxide having four atoms of oxygen in the molecule; a quadroxide; as, osmium tetroxide, OsO/.
- Osmium - n. - A rare metallic element of the platinum group, found native as an alloy in platinum ore, and in iridosmine. It is a hard, infusible, bluish or grayish white metal, and the heaviest substance known. Its tetroxide is used in histological experiments to stain tissues. Symbol Os. Atomic weight 191.1. Specific gravity 22.477.
- Euchlorine - n. - A yellow or greenish yellow gas, first prepared by Davy, evolved from potassium chlorate and hydrochloric acid. It is supposed to consist of chlorine tetroxide with some free chlorine.