Definition of "antimonious" [an•ti•mo•ni•ous]

• Of or containing antimony. (adjective)
• Containing pentavalent antimony. (adjective)

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• "Caesia is separated from all the other alkalies by adding to the acid solution of the mixed chlorides a strongly acid cold solution of antimonious chloride."
• "Antimony forms two series of salts, antimonious and antimonic; and advantage is taken of this in its determination volumetrically."
• "Either sulphide of antimony yields antimonious chloride on boiling with hydrochloric acid, sulphuretted hydrogen being given off; and, in the case of antimonic sulphide, sulphur is deposited."