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1. The base of the natural system of logarithms; approximately equal to 2.718282...
    
2. The 5th letter of the Roman alphabet
   - E

1. A fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body
   - vitamin E, tocopherol
    
2. The cardinal compass point that is at 90 degrees
   - east, due east, eastward
    
3. A radioactive transuranic element produced by bombarding plutonium with neutrons
   - einsteinium, Es, atomic number 99

Derived forms: es

Type of: alphabetic character, antioxidant, cardinal compass point, fat-soluble vitamin, letter, letter of the alphabet, metal, metallic element, transcendental number

Part of: Latin alphabet, Roman alphabet

Encyclopedia: E E, Gordon Rupp E, moj narode