We found 27 dictionaries that define the word vitamin B12:

General (13 matching dictionaries)

1. vitamin B12: Merriam-Webster
2. vitamin B12: Oxford Learner's Dictionaries
3. vitamin B12: American Heritage Dictionary of the English Language
4. vitamin B12: Collins English Dictionary
5. vitamin B12: Vocabulary.com
6. vitamin b12: Wordnik
7. vitamin b12, vitamin B12: Cambridge Advanced Learner's Dictionary
8. vitamin B12: Wiktionary
9. vitamin B12: Dictionary.com
10. vitamin b12: Rhymezone
11. vitamin b12: FreeDictionary.org
12. vitamin b12: Mnemonic Dictionary
13. vitamin B12: TheFreeDictionary.com

Art (1 matching dictionary)

14. Vitamin B12: Health & Beauty Glossary

Computing (1 matching dictionary)

15. vitamin B12: Encyclopedia

Medicine (11 matching dictionaries)

16. vitamin B12: Merriam-Webster Medical Dictionary
17. Vitamin B12: MedTerms.com Medical Dictionary
18. online medical dictionary (No longer online)
19. GASTROLAB Digestive Dictionary (No longer online)
20. Vitamin B12: MEDLINE plus Illustrated Medical Encyclopedia
21. Vitamin B12: Glossary of Herbs, Botanicals and Other Products
22. vitamin B12: Dictionary of Cancer Terms
23. B12, Vitamin: Medical Dictionary Online
24. vitamin B12: Medical dictionary
25. University of Maryland Glossary of Medical Terms (No longer online)
26. Vitamin B12: Drug Medical Dictionary

Tech (1 matching dictionary)

27. Vitamin B12: Beauty & Health Glossary

Definitions from Wiktionary (vitamin B12) ▸ noun:  (biochemistry) The compound cobalamin or cyanocobalamin. Similar: cobalamin, cyanocobalamin, antipernicious anemia factor, cyanocobalmin, cobalmin, cyanocobalamine, cyanocobolamin, hydroxocobalamin, aquocobalamin, aquacobalamin, more... Opposite: lack of vitamin b12 Phrases: vitamin b12 neuropathy, Vitamin B12 deficiency, Vitamin B12 total synthesis, more... ▸ Words similar to vitamin B12 ▸ Usage examples for vitamin B12 ▸ Idioms related to vitamin B12 ▸ Wikipedia articles (New!) ▸ Words that often appear near vitamin B12 ▸ Rhymes of vitamin B12 ▸ Invented words related to vitamin B12