Dictionary
i•so•mer
Pronunciation: (ī'su-mur), [key]—
n.
1. Chem.a compound displaying isomerism with one or more other compounds.
2. Also called
nuclear isomer. Physics.a nuclide that exhibits isomerism with one or more other nuclides.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.