WordReference Random House Unabridged Dictionary of American English © 2026
me•som•er•ism
(mi zom′ə riz′əm, -som′-),USA pronunciation n. [Chem.]
- Chemistryresonance (def. 6).
- meso- + -merism, on the model of isomerism, tautomerism 1925–30
'mesomerism' also found in these entries (note: many are not synonyms or translations):