Dictionary

isomerism

noun isom·er·ism \ī-ˈsä-mə-ˌri-zəm\

Definition of ISOMERISM

1
:  the relationship of two or more chemical species that are isomers
2
:  the relation of two or more nuclides with the same mass numbers and atomic numbers but different energy states and rates of radioactive decay
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First Known Use of ISOMERISM

1838
Medical Dictionary

isomerism

noun isom·er·ism \ī-ˈsäm-ə-ˌriz-əm\

Medical Definition of ISOMERISM

1
:  the relation of two or more chemical species that are isomers
2
:  the relation of two or more nuclides with the same mass numbers and atomic numbers but different energy states and rates of radioactive decay
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