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

First Known Use of isomerism

1838

in the meaning defined at sense 1

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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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