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Definition of Phosphorous acid
1. Noun. A clear or yellow monobasic acid (H3PO2).
Definition of Phosphorous acid
1. Noun. (chemistry) a yellowish hygroscopic solid, H3PO3; a mild reducing agent ¹
¹ Source: wiktionary.com
Medical Definition of Phosphorous acid
1. H3PO3;its salts are phosphites. (05 Mar 2000)