We found 43 dictionaries that define the word vitamin a:

General (18 matching dictionaries)

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

Art (1 matching dictionary)

17. Vitamin A: Health & Beauty Glossary

Computing (1 matching dictionary)

18. vitamin A: Encyclopedia

Medicine (17 matching dictionaries)

19. vitamin A: Merriam-Webster Medical Dictionary
20. Dorland's Illustrated Medical Dictionary (No longer online)
21. Vitamin A: MedTerms.com Medical Dictionary
22. Medical Dictionary (No longer online)
23. Breast Cancer Talking Dictionary (No longer online)
24. Vitamin A (retinol): Merck Manuals
25. online medical dictionary (No longer online)
26. Hepatitis C Information Central (No longer online)
27. Vitamin A: MEDLINE plus Illustrated Medical Encyclopedia
28. Vitamin A: Glossary of Herbs, Botanicals and Other Products
29. vitamin A: Dictionary of Cancer Terms
30. Glossary of HIV/AIDS Related Terms (No longer online)
31. vitamin A: Medical dictionary
32. University of Maryland Glossary of Medical Terms (No longer online)
33. Vitamin Glossary (No longer online)
34. Vitamin A: Drug Medical Dictionary
35. Hyperdictionary (No longer online)

Science (1 matching dictionary)

36. vitamin A: Evolution Glossary

Slang (1 matching dictionary)

37. Vitamin A, vitamin-a: Urban Dictionary

Sports (1 matching dictionary)

38. Vitamin A: Body Building

Tech (3 matching dictionaries)

39. Beauty Glossary (No longer online)
40. Farrier & Hoofcare (No longer online)
41. Vitamin A: Beauty & Health Glossary

(Note: See vitamin_as as well.)

Definitions from Wiktionary (vitamin A) ▸ noun:  (biochemistry) Any of several closely related fat-soluble vitamins that are essential for normal vision; retinol. Similar: axerophthol, A, antiophthalmic factor, lipovitamin, B vitamin, retinoylation, vitamin B, recoverin, peropsin, calretinin, more... Opposite: hypovitaminosis A Phrases: Vitamin A deficiency, vitamin A acid, vitamin a aldehyde, low vitamin a diet, teratogenic vitamin a a, more... Adjectives: megavitamin, retinoid, gentian violet, adrenergic, retinal, anserine, pantherine, multivitamin, hydrocholeretic, doss, dispensable ▸ Words similar to vitamin a ▸ Usage examples for vitamin a ▸ Idioms related to vitamin a ▸ Wikipedia articles (New!) ▸ Words that often appear near vitamin a ▸ Rhymes of vitamin a ▸ Invented words related to vitamin a