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hypophosphoric acid

American  

noun

  1. a tetrabasic acid, H 4 P 2 O 6 , produced by the slow oxidation of phosphorous in moist air.

hypophosphoric acid British  
/ ˌhaɪpəfɒsˈfɒrɪk /

noun

  1. a crystalline odourless deliquescent solid: a tetrabasic acid produced by the slow oxidation of phosphorus in moist air. Formula: H 4 P 2 O 6

"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

Etymology

Origin of hypophosphoric acid

First recorded in 1850–55

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.