Definition of "tautomerism" []

• Chemical isomerism characterized by relatively easy interconversion of isomeric forms in equilibrium. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Papers on the subject of ring tension and double bonds as well as valency tautomerism."
• "By experiments conducted with the hydroxy - pyridines he believed that he had demonstrated a relation between tautomerism or changed space relations in these sort of substances and curative properties."
• "Chemical shift equivalence by rapid interconversion of structures may occur due to rapid rotation about bonds or due the rapid chemical changes such as keto-enol tautomerism."