isomer

noun
iso·​mer | \ ˈī-sə-mər How to pronounce isomer (audio) \

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

Examples of isomer in a Sentence

Recent Examples on the Web For example, technetium-99m is an isomer of technetium-99. Artemis Spyrou, The Conversation, 24 May 2022 This allows the molecule to turn into an energy-rich isomer. Joshua Hawkins, BGR, 15 Apr. 2022 That isomer acts as a liquid solar energy storage solution. Joshua Hawkins, BGR, 15 Apr. 2022 THCs are psychoactive, and the term THC generally refers to the delta-9 isomer, but several others, including delta-8, may also be found naturally in plants, in small amounts. Dr. Keith Roach, oregonlive, 5 Nov. 2021 His companies do not sell Delta-8 products because Faude has not seen enough research on possible negative effects of the isomer. Jordyn Noennig, Milwaukee Journal Sentinel, 5 Jan. 2022 Delta 8 is considered an isomer of Delta 9 THC, the main psychoactive ingredient in marijuana. Jay R. Jordan, Chron, 8 Nov. 2021 Delta-8 has been reported to be less active than delta-9; however, it has not been studied as much as the delta-9 isomer. Dr. Keith Roach, oregonlive, 5 Nov. 2021 It's considered an isomer of Delta 9 THC, the main psychoactive ingredient in marijuana. Jay R. Jordan, Chron, 26 Oct. 2021 See More

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.

First Known Use of isomer

1855, in the meaning defined at sense 1

History and Etymology for isomer

International Scientific Vocabulary, back-formation from isomeric

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Dictionary Entries Near isomer

isomagnetic

isomer

isomerase

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Statistics for isomer

Last Updated

5 Jun 2022

Cite this Entry

“Isomer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/isomer. Accessed 26 Jun. 2022.

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More Definitions for isomer

isomer

noun
iso·​mer | \ ˈī-sə-mər How to pronounce isomer (audio) \

Medical Definition of isomer

1 : any 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

More from Merriam-Webster on isomer

Britannica.com: Encyclopedia article about isomer

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