1. 
   Osmious
   Os'mi·ous adjective (Chemistry) Denoting those compounds of osmium in which the element has a valence relatively lower than in the osmic compounds; as, osmious chloride. [ Written also osmous .] Osmious acid ...
   Found op http://www.encyclo.co.uk/webster/O/37
   
   
2. 
   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 s...
   Found op http://www.mondofacto.com/facts/dictionary?osmious
   
   
3. 
   Osmious
   • (a.) Denoting those compounds of osmium in which the element has a valence relatively lower than in the osmic compounds; as, osmious chloride.
   Found op http://thinkexist.com/dictionary/meaning/osmious/
   
   

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