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dithionous acid

British  
/ daɪˈθaɪənəs /

noun

  1. Also called: hyposulphurous acid.   hydrosulphurous acid.  an unstable dibasic acid known only in solution and in the form of dithionite salts. It is a powerful reducing agent. Formula: H 2 S 2 O 4

"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 dithionous acid

from di- 1 + thion-, from Greek theion sulphur + -ous

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.