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tautomerism

American  
[taw-tom-uh-riz-uhm] / tɔˈtɒm əˌrɪz əm /

noun

Chemistry.

  1. the ability of certain organic compounds to react in isomeric structures that differ from each other in the position of a hydrogen atom and a double bond.

tautomerism British  
/ tɔːˈtɒməˌrɪzəm, ˌtɔːtəˈmɛrɪk /

noun

  1. the ability of certain chemical compounds to exist as a mixture of two interconvertible isomers in equilibrium See also keto-enol tautomerism

"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

Other Word Forms

  • nontautomeric adjective
  • tautomeric adjective

Etymology

Origin of tautomerism

First recorded in 1880–85; tauto- + (iso)merism

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.