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 

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