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tautomerism

[taw-tom-uh-riz-uh m] /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.
Origin of tautomerism
1880-1885
First recorded in 1880-85; tauto- + (iso)merism
Related forms
tautomeric
[taw-tuh-mer-ik] /ˌtɔ təˈmɛr ɪk/ (Show IPA),
adjective
nontautomeric, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for tautomerism

tautomerism

/tɔːˈtɒməˌrɪzəm/
noun
1.
the ability of certain chemical compounds to exist as a mixture of two interconvertible isomers in equilibrium See also keto-enol tautomerism
Derived Forms
tautomeric (ˌtɔːtəˈmɛrɪk) adjective
Word Origin
C19: from tauto- + isomerism
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
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tautomerism in Medicine

tautomerism tau·tom·er·ism (tô-tŏm'ə-rĭz'əm)
n.
Chemical isomerism in which the isomeric forms differ little, usually only in the position of a hydrogen atom, and are able to exist in equilibrium and react with each other.


tau'to·mer'ic (tô'tə-měr'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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