definition of
E

[1] #1 E n. [vitamin E, tocopherol] a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body. wn

[2] #2 E n. [einsteinium, Es, atomic number 99] a radioactive transuranic element produced by bombarding plutonium with neutrons. wn

[3] #3 E n. [east, due east, eastward] the cardinal compass point that is at 90 degrees. wn

[4] #4 E n. [e] the base of the natural system of logarithms; approximately equal to 2.718282.... wn

[5] #5 E n. [e] the 5th letter of the Roman alphabet. wn