motor neuron

noun

: a neuron that passes from the central nervous system or a ganglion toward a muscle and conducts an impulse that causes movement

called also motoneuron

Example Sentences

Recent Examples on the Web This patient showed clear signs of motor neuron disease, which occurs in up to 15% of FTD cases. Neuroskeptic, Discover Magazine, 22 Sep. 2010 The number of synaptic connections (called varicosities) between the sensory and the motor neuron increased rapidly after 5HT 'training'. Neuroskeptic, Discover Magazine, 27 Dec. 2014 Pruitt, who has a rare motor neuron disease called Kennedy’s disease, uses an electric scooter to get around and lives in a mobile home. San Diego Union-Tribune, 24 Nov. 2022 These proteins play a large part in the formation of motor neuron diseases. Joshua Hawkins, BGR, 14 June 2022 The four types of SMA are ranked by severity and related to how much motor neuron protein a person’s cells can still produce. Jim Daley, Scientific American, 18 Oct. 2021 Among them are Insilico Medicine, Kebotix and BenevolentAI; the last recently raised $115 million to extend its AI technology to the discovery of drugs for motor neuron disease, Parkinson’s and other hard-to-treat disorders. Jeff Carbeck, Scientific American, 14 Sep. 2018 Will Forest’s battle with an unclassified motor neuron disease progressed far more quickly than anyone expected. Alexei Koseff, San Francisco Chronicle, 1 Aug. 2021 These proteins essentially function as an off button for motor neuron plasticity. Sarah Degenova Ackerman, The Conversation, 12 Apr. 2021 See More

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

Word History

First Known Use

1898, in the meaning defined above

Time Traveler
The first known use of motor neuron was in 1898

Dictionary Entries Near motor neuron

Cite this Entry

“Motor neuron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/motor%20neuron. Accessed 31 Jan. 2023.

Kids Definition

motor neuron

noun
: a neuron that passes from the central nervous system or a ganglion toward or to a muscle and carries a nerve impulse that causes movement compare sensory neuron

Medical Definition

motor neuron

noun
: a neuron that passes from the central nervous system or a ganglion toward or to a muscle and conducts a nerve impulse that causes movement

called also motoneuron

compare interneuron, sensory neuron

More from Merriam-Webster on motor neuron

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