interneuron

noun

in·​ter·​neu·​ron ˌin-tər-ˈnu̇r-ˌän How to pronounce interneuron (audio) -ˈnyu̇r- How to pronounce interneuron (audio)
: a neuron that conveys impulses from one neuron to another
interneuronal
ˌin-tər-ˈnu̇r-ə-nᵊl How to pronounce interneuron (audio)
-ˈnyu̇r-;
-nu̇-ˈrō-
-nyu̇-ˈrō- How to pronounce interneuron (audio)
adjective

Examples of interneuron in a Sentence

Recent Examples on the Web
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These cholinergic interneurons are already known to play a key role in behavioral flexibility and adaptation. New Atlas, 8 Oct. 2025 Within just four days, the scientists noticed major changes: a group of brain cells in the hippocampus, called CCK interneurons, became abnormally active. Lucy Notarantonio, MSNBC Newsweek, 1 Oct. 2025 Some classes were linked to genes active in early forming excitatory neurons, others in later-developing interneurons or glial cells. William A. Haseltine, Forbes.com, 21 July 2025 Another potential explanation for the effectiveness of 40-hertz stimulation is the discovery that interneurons —a subset of neurons— produce certain peptides in far greater quantities following treatment. William A. Haseltine, Forbes, 29 Feb. 2024 An oversimplified organoid model for the cortex would be missing all those interneurons and would therefore be useless for studying how the developing brain balances its excitatory and inhibitory signals. Quanta Magazine, 9 Aug. 2017

Word History

First Known Use

1938, in the meaning defined above

Time Traveler
The first known use of interneuron was in 1938

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Cite this Entry

“Interneuron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/interneuron. Accessed 30 Jan. 2026.

Kids Definition

interneuron

noun
: a neuron that carries a nerve impulse from one neuron to another

Medical Definition

interneuron

noun
variants or British interneurone
: a neuron that conveys impulses from one neuron to another

called also association neuron, associative neuron, internuncial, internuncial neuron

compare motor neuron, sensory neuron
interneuronal adjective

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