motor neuron

noun

Definition of motor neuron

: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

First Known Use of motor neuron

1898


Medical Dictionary

motor neuron

noun

medical Definition of motor neuron

: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

Learn More about motor neuron


Seen and Heard

What made you want to look up motor neuron? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

a strongly worded attack

Get Word of the Day daily email!

Test Your Vocabulary

Merriam-Webster's New Words Quiz—Fall 2017 Edition!

  • young-plant-shoots
  • Which of the following is a new sense of the word bunny?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!