Definition of isomer
1 : one of two or more compounds, radicals, or ions that contain the same number of atoms of the same elements but differ in structural arrangement and properties
2 : a nuclide isomeric with one or more others
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Recent Examples of isomer from the Web
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But the military research into isomers still continues.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'isomer'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of isomer
International Scientific Vocabulary, back-formation from isomeric
First Known Use: 1855
Medical Dictionary
Learn More about isomer
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Britannica.com: Encyclopedia article about isomer
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