[1] : The Collaborative International Dictionary of English v.0.48

retinol \ret"inol\, n. gr. ??? resin + l. oleum oil.
   1. chem. a hydrocarbon oil c32h16, obtained by the
      distillation of resin, -- used as a solvent, as an
      antiseptic, and in printer's ink.
      1913 webster +pjc

   2. one of the compounds which function as vitamin a. called
      also vitamin a, vitamin a1 and vitamin a alcohol.
      see vitamin a1.
      pjc
see also:
c32h16 vitamin a vitamin a1 vitamin a alcohol 

[2] : The Collaborative International Dictionary of English v.0.48

vitamin a \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.

   syn: antiophthalmic factor, axerophthol.
        wordnet 1.5

[3] : The Collaborative International Dictionary of English v.0.48

vitamin a1 \vitamin a1\ n.
   retinol c20h30o, one of the substances also called
   vitamin a. it is also called more specifically vitamin a
   alcohol. it is a required factor for human nutrition. the
   usp unit of activity is equal to 0.30 micrograms of retinol.

   syn: retinol.
        wordnet 1.5 +pjc
see also:
c20h30o vitamin a vitamin a alcohol 

[4] : The Collaborative International Dictionary of English v.0.48

vitamin a2 \vitamin a2\ n.
   dehydroretinol c20h28o, one of the substances also called
   vitamin a. it has about 40 of the bioactivity of vitamin
   a1.

   syn: dehydroretinol.
        wordnet 1.5 +pjc
see also:
c20h28o vitamin a 

[5] : The Collaborative International Dictionary of English v.0.48

axerophthol \axerophthol\ n.
   1. a vitamin essential for normal vision c20h30o; it
      prevents night blindness or inflammation or dryness of the
      eyes; same as vitamin a. one u.s.p. unit of vitamin a is
      equivalent to 0.30 micrograms of pure vitamin a alcohol.

   syn: vitamin a; vitamin a alcohol; antiophthalmic factor;
        biosterol; retinol; a.
        wordnet 1.5 +pjc
see also:
c20h30o vitamin a 

[6] : WordNet (r) 2.0

vitamin a
     n : any of several fat-soluble vitamins essential for normal
         vision; prevents night blindness or inflammation or
         dryness of the eyes syn: antiophthalmic factor, axerophthol,
          a
see also:
antiophthalmic factor axerophthol a 

Vitamin >> V Words
Vitamin, definition of term: Vitamin
vitamin_pag1.html

Vitamin D >> V Words
Vitamin D, definition of term: Vitamin D
vitamin+d_pag1.html

Vitamin E >> V Words
Vitamin E, definition of term: Vitamin E
vitamin+e_pag1.html

Vitamin H >> V Words
Vitamin H, definition of term: Vitamin H
vitamin+h_pag1.html

Vitamin M >> V Words
Vitamin M, definition of term: Vitamin M
vitamin+m_pag1.html

Vitamin K >> V Words
Vitamin K, definition of term: Vitamin K
vitamin+k_pag1.html

Vitamin C >> V Words
Vitamin C, definition of term: Vitamin C
vitamin+c_pag1.html

Vitamin B2 >> V Words
Vitamin B2, definition of term: Vitamin B2
vitamin+b2_pag1.html

Vitamin B >> V Words
Vitamin B, definition of term: Vitamin B
vitamin+b_pag1.html

Vitamin A >> V Words
Vitamin A, definition of term: Vitamin A
vitamin+a_pag1.html

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