PHOSPHOROUS

phosphorous. Phosphorous, a. denoting an acid, formed by a combination of phospherus and oxygene

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Phos″phor‐ous (fŏs″fŏr‐ŭs), 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.