• synonyms


  1. a salt of hypophosphorous acid, as sodium hypophosphite, NaH2PO2.
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Origin of hypophosphite

First recorded in 1810–20; hypo- + phosphite
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for hypophosphite

Historical Examples of hypophosphite

  • Methylene blue can be reduced by the H2 and the hypophosphite oxidized.

    The Nature of Animal Light

    E. Newton Harvey

  • From the double decomposition of hypophosphite of lime and sulphate of iron, as hypophosphite of potash.

  • There is no evidence that this condition is met by the hypophosphite salt.

British Dictionary definitions for hypophosphite


  1. any salt of hypophosphorous acid
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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