ion channel

noun

Definition of ion channel

: a cell membrane channel that is selectively permeable to certain ions (as of calcium or sodium)

Examples of ion channel in a Sentence

Recent Examples on the Web Insects use many other classes of ion channel olfactory receptors, including ones that are much more complex and much more specific than those of the jumping bristletail. Jordana Cepelewicz, Wired, 27 June 2021 Insects use many other classes of ion channel olfactory receptors, including ones that are much more complex and much more specific than those of the jumping bristletail. Jordana Cepelewicz, Wired, 27 June 2021 Insects use many other classes of ion channel olfactory receptors, including ones that are much more complex and much more specific than those of the jumping bristletail. Jordana Cepelewicz, Wired, 27 June 2021 Insects use many other classes of ion channel olfactory receptors, including ones that are much more complex and much more specific than those of the jumping bristletail. Jordana Cepelewicz, Wired, 27 June 2021 Insects use many other classes of ion channel olfactory receptors, including ones that are much more complex and much more specific than those of the jumping bristletail. Jordana Cepelewicz, Wired, 27 June 2021 Insects use many other classes of ion channel olfactory receptors, including ones that are much more complex and much more specific than those of the jumping bristletail. Jordana Cepelewicz, Wired, 27 June 2021 Insects use many other classes of ion channel olfactory receptors, including ones that are much more complex and much more specific than those of the jumping bristletail. Jordana Cepelewicz, Wired, 27 June 2021 Insects use many other classes of ion channel olfactory receptors, including ones that are much more complex and much more specific than those of the jumping bristletail. Quanta Magazine, 21 June 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ion channel.' 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 ion channel

1964, in the meaning defined above

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Time Traveler for ion channel

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The first known use of ion channel was in 1964

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Dictionary Entries Near ion channel

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Last Updated

18 Sep 2021

Cite this Entry

“Ion channel.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ion%20channel. Accessed 26 Sep. 2021.

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More Definitions for ion channel

ion channel

noun

Medical Definition of ion channel

: a cell membrane channel that is selectively permeable to certain ions (such as of calcium or sodium) Researchers now know that not only do all cells, including nerve cells, have ion channels through which substances such as sodium and calcium move in and out, but that particular subtypes of sodium channels govern the transmission of pain.— Judy Foreman, The Los Angeles Times, 24 Nov. 2003

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