n :  any of several fat-soluble vitamins that are chemically tocopherols, are essential in the nutrition of various vertebrates in which their absence is associated with infertility, degenerative changes in muscle, or vascular abnormalities, are found esp. in wheat germ, vegetable oils, egg yolk, and green leafy vegetables or are made synthetically, and are used chiefly in animal feeds and as antioxidants : esp  :  ALPHA-TOCOPHEROL .
 
 
 
Similar sounding terms:  vi·ta·min  vitamin A  vitamin A₁  vitamin A₂ 
 
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