Polybasic :: Polybasic (a.) Capable of neutralizing, or of combining with, several molecules of a monacid base; having several hydrogen atoms capable of being replaced by basic radicals; -- said of certain acids; as, sulphuric acid is polybasic..

Polybasite :: Polybasite (n.) An iron-black ore of silver, consisting of silver, sulphur, and antimony, with some copper and arsenic..

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