retinol

Definitions of retinol
  1. noun
    an unsaturated alcohol that occurs in marine fish-liver oils and is synthesized biologically from carotene
    synonyms: vitamin A1
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    type of:
    A, antiophthalmic factor, axerophthol, vitamin A
    any of several fat-soluble vitamins essential for normal vision; prevents night blindness or inflammation or dryness of the eyes
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