1. (noun)vitamin E, tocopherol, E a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body Synonyms: tocopherol, east, atomic number 99, eastward, due east, einsteinium, vitamin E
2. (noun)einsteinium, Es, E, atomic number 99 a radioactive transuranic element produced by bombarding plutonium with neutrons Synonyms: atomic number 99, east, tocopherol, eastward, due east, einsteinium, vitamin E