Phosphorous

(definition) by Webster 1913 Wed Dec 22 1999 at 1:58:36

Phos"phor*ous (?), a. [Cf. F. phosphoreux.] Chem.

Of or pertaining to phosphorus; resembling or containing phosphorus; specifically, designating those compounds in which phosphorus has a lower valence as contrasted with phosphoric compounds; as, phosphorous acid, H3PO3.

 

© Webster 1913.

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