We found 6 dictionaries that define the word myelin sheaths:

General (5 matching dictionaries)

1. myelin sheaths: Merriam-Webster
2. myelin sheaths: Collins English Dictionary
3. myelin sheaths: Vocabulary.com
4. myelin sheaths: Wiktionary
5. Myelin sheaths: Wikipedia, the Free Encyclopedia

Medicine (1 matching dictionary)

6. myelin sheaths: Merriam-Webster Medical Dictionary

(Note: See myelin_sheath as well.)

Definitions from Wiktionary (myelin sheath) ▸ noun:  (neuroanatomy) An envelope of myelin that surrounds nerve fibres. ▸ Also see myelin_sheath ▸ Words similar to myelin sheaths ▸ Usage examples for myelin sheaths ▸ Idioms related to myelin sheaths ▸ Wikipedia articles (New!) ▸ Words that often appear near myelin sheaths ▸ Rhymes of myelin sheaths ▸ Invented words related to myelin sheaths