Word Study
vitamin a
WORDNET DICTIONARY
Noun vitamin a has 1 sense
- vitamin a(n = noun.substance) a, antiophthalmic factor, axerophthol - any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes; Array is a kind of fat-soluble vitamin
has particulars: retinol, vitamin a1, dehydroretinol, vitamin a2
CIDE DICTIONARY
vitamin a, n.
any of several related fat-soluble vitamins (such as retinol) essential for normal vision; it also prevents night blindness or inflammation or dryness of the eyes. [WordNet 1.5]
For further exploring for "vitamin a" in Webster Dictionary Online
