enantiomer

noun
en·​an·​tio·​mer | \ i-ˈnan-tē-ə-mər How to pronounce enantiomer (audio) \

Definition of enantiomer

: either of a pair of chemical compounds whose molecular structures have a nonsuperimposable mirror-image relationship to each other — compare diastereomer

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Other Words from enantiomer

enantiomeric \ i-​ˌnan-​tē-​ə-​ˈmer-​ik How to pronounce enantiomer (audio) \ adjective

Examples of enantiomer in a Sentence

Recent Examples on the Web And then there’s the case of esketamine, which is the S-enantiomer of ketamine, a similar (in molecular structure) but more potent agent than ketamine. Joshua Cohen, Forbes, 5 July 2021 Ketamine is a combination of two enantiomers, or mirror image molecules. Megan Thielking, Scientific American, 6 Mar. 2019 Strangely enough, meth's enantiomer is the active ingredient in Vick's Vapor Inhaler. William Herkewitz, Popular Mechanics, 19 Aug. 2013

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'enantiomer.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of enantiomer

circa 1929, in the meaning defined above

History and Etymology for enantiomer

Greek enantios + English -mer

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Time Traveler for enantiomer

Time Traveler

The first known use of enantiomer was circa 1929

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Dictionary Entries Near enantiomer

enantioblastic

enantiomer

enantiomorph

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Cite this Entry

“Enantiomer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/enantiomer. Accessed 24 Oct. 2021.

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More Definitions for enantiomer

enantiomer

noun
en·​an·​tio·​mer | \ in-ˈant-ē-ə-mər How to pronounce enantiomer (audio) \

Medical Definition of enantiomer

: either of a pair of chemical compounds whose molecular structures have a mirror-image relationship to each other

called also optical antipode

Other Words from enantiomer

enantiomeric \ -​ˌant-​ē-​ə-​ˈmer-​ik How to pronounce enantiomer (audio) \ adjective
enantiomerically \ -​i-​k(ə-​)lē How to pronounce enantiomer (audio) \ adverb

More from Merriam-Webster on enantiomer

Britannica.com: Encyclopedia article about enantiomer

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