We found 29 dictionaries that define the word white matter:

General (18 matching dictionaries)

1. white matter: Merriam-Webster
2. white matter: Oxford Learner's Dictionaries
3. white matter: American Heritage Dictionary of the English Language
4. white matter: Collins English Dictionary
5. white matter: Vocabulary.com
6. white matter: Cambridge Advanced Learner's Dictionary
7. White matter: InfoVisual Visual Dictionary
8. white matter: Wiktionary
9. white matter: The Wordsmyth English Dictionary-Thesaurus
10. white matter: Infoplease Dictionary
11. white matter: Dictionary.com
12. White matter: Wikipedia, the Free Encyclopedia
13. white matter: Rhymezone
14. white matter: FreeDictionary.org
15. white matter: Mnemonic Dictionary
16. white matter: TheFreeDictionary.com

Business (1 matching dictionary)

17. white matter: Legal dictionary

Computing (1 matching dictionary)

18. white matter: Encyclopedia

Medicine (9 matching dictionaries)

19. white matter: Merriam-Webster Medical Dictionary
20. Matter, white, White matter: MedTerms.com Medical Dictionary
21. ABTA Brain Tumor Patients (No longer online)
22. online medical dictionary (No longer online)
23. Multiple Sclerosis Encyclopaedia (No longer online)
24. Neurotrauma Glossary (No longer online)
25. white matter: Medical dictionary
26. WeMove Glossary of Terms (No longer online)
27. Matter, white, White matter: Drug Medical Dictionary

(Note: See white_matters as well.)

Definitions from Wiktionary (white matter) ▸ noun:  (neuroanatomy) A region of the central nervous system containing myelinated nerve fibres and no dendrites. Similar: substantia alba, grey matter, myelin, nerve fibre, myelin sheath, neuropil, myeline, neurofiber, corona radiata, cell body, more... Opposite: gray matter, cortical matter Phrases: Leukoencephalopathy with vanishing white matter, more... ▸ Words similar to white matter ▸ Usage examples for white matter ▸ Idioms related to white matter ▸ Wikipedia articles (New!) ▸ Words that often appear near white matter ▸ Rhymes of white matter ▸ Invented words related to white matter