We found 9 dictionaries that define the word upper motor neuron:

General (3 matching dictionaries)

1. upper motor neuron: Dictionary.com
2. Upper motor neuron: Wikipedia, the Free Encyclopedia
3. upper motor neuron: TheFreeDictionary.com

Computing (1 matching dictionary)

4. upper motor neuron: Encyclopedia

Medicine (5 matching dictionaries)

5. Upper motor neuron: MedTerms.com Medical Dictionary
6. Upper motor neuron: MedFriendly Glossary
7. upper motor neuron: Medical dictionary
8. Upper motor neuron, Upper motor neuron: Drug Medical Dictionary

Definitions from Wikipedia (Upper motor neuron) ▸ noun:  Upper motor neurons (UMNs) is a term introduced by William Gowers in 1886. Phrases: upper motor neuron n's, upper motor neuron ns, Upper motor neuron lesion, Upper motor neuron syndrome, more... ▸ Words similar to upper motor neuron ▸ Usage examples for upper motor neuron ▸ Idioms related to upper motor neuron ▸ Wikipedia articles (New!) ▸ Words that often appear near upper motor neuron ▸ Rhymes of upper motor neuron ▸ Invented words related to upper motor neuron