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

Examples of motor neuron in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Here’s how other university leaders have responded to the White House Walt’s project focused on early diagnosis and treatment options for ALS, also known as Lou Gehrig’s Disease, a motor neuron disease that causes paralysis and affects roughly 30,000 people in the US. Taylor Romine, CNN Money, 16 Apr. 2025 On average, people with motor neuron disease die 27 months after diagnosis, though outcomes vary widely, with some people living decades afterward. David Faris, MSNBC Newsweek, 11 Apr. 2025 But this past October, McCue, who is from the English town of Grimsby, was diagnosed with motor neuron disease (MND). Cara Lynn Shultz, People.com, 21 Feb. 2025 The role of survival motor neuron protein (SMN) in protein homeostasis Clevland Clinic. Jack Knudson, Discover Magazine, 20 Feb. 2025 See All Example Sentences for motor neuron

Word History

First Known Use

1898, in the meaning defined above

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

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Cite this Entry

“Motor neuron.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/motor%20neuron. Accessed 21 Apr. 2025.

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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