WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / P / phosphorous acid phosphorous acid noun /fɑsfərəsæsɪd/ 4 syllables 16 letters Scrabble 28 WWF 30 Definitions noun a clear or yellow monobasic acid (H3PO2) hypophosphorous acidorthophosphorous acid Look “phosphorous acid” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →