Definition of vitamin E
: 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 especially in leaves and in seed germ oils, and are used chiefly in animal feeds and as antioxidants
First Known Use of vitamin e
Medical Definition of vitamin E
: any of several fat-soluble vitamins that are chemically tocopherols or tocotrienols whose lack in the human body is associated especially with neurological symptoms (as ataxia and muscle weakness), that are found especially in wheat germ, vegetable oils, egg yolk, and green leafy vegetables or are made synthetically, and that are used chiefly in animal feeds and as antioxidants; especially : alpha-tocopherol
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