E (Noun) — The cardinal compass point that is at 90 degrees.
E (Noun) — A radioactive transuranic element produced by bombarding plutonium with neutrons.
E (Noun) — The 5th letter of the Roman alphabet.
E (Noun) — A fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body.
E (Noun) — The base of the natural system of logarithms; approximately equal to 2.718282....