| osmious | <chemistry> Denoting those compounds of osmium in which the element has a valence relatively lower than in the osmic compounds; as, osmious chloride. <chemistry> Alternative forms: osmous] Osmious acid, an acid derived from osmium, analogous to sulphurous acid, and forming unstable salts. It is a brown amorphous substance. Source: Websters Dictionary (01 Mar 1998) |
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