Definition of Isotope
Isotope: A form of a chemical element with the same atomic number as another element but having a different atomic mass. Isotopes are used in a number of medical tests.
Source: MedTerms™ Medical Dictionaryhttp://www.medterms.com/script/main/art.asp?articlekey=4059
Last Editorial Review: 3/26/1998 2:25:00 PM
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