E

noun

1. a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body
2. the base of the natural system of logarithms; approximately equal to 2.718282 …
3. a radioactive transuranic element produced by bombarding plutonium with neutrons
4. the 5th letter of the Roman alphabet
5. the cardinal compass point that is at 90 degrees
6. the 5th letter of the Roman alphabet