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hypophosphorous acid

noun
  1. a colorless or yellowish, water-soluble, liquid, monobasic acid, H3PO2, having a sour odor, and used as a reducing agent.
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Origin of hypophosphorous acid

First recorded in 1810–20
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for hypophosphorous acid

hypophosphorous acid

noun
  1. a colourless or yellowish oily liquid or white deliquescent solid: a monobasic acid and a reducing agent. Formula: H 3 PO 2
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012