- One of two or more substances displaying isomerism, l-glucose and d-glucose or citrate and isocitrate.
- One of two or more nuclides having the same atomic and mass numbers but differing in energy states for a finite period of time, 99mTc and 99Tc.
[iso- + G. meros, part]
Search Stedman's Medical Dictionary
Examples: glitazone, GI cocktail, etc.