noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A form of isomerism in which a dynamic equilibrium between multiple isomers exists, such as that between an enol and a ketone. countable, uncountable

Etymology

From tautomer + -ism.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.