Definitions for: E

[n] the 5th letter of the Roman alphabet
[n] a fat-soluble vitamin that is essential for normal reproduction; an important antioxidant that neutralizes free radicals in the body
[n] the base of the natural system of logarithms
[n] the cardinal compass point that is at 90 degrees
[n] a radioactive transuranic element produced by bombarding plutonium with neutrons

Webster (1913) Definition: E ([=e]).
1. The fifth letter of the English alphabet.

Note: It derives its form, name, and value from the Latin,
the form and value being further derived from the
Greek, into which it came from the Ph[oe]nician, and
ultimately, probably, from the Egyptian. Its
etymological relations are closest with the vowels i,
a, and o, as illustrated by to fall, to fell; man, pl.
men; drink, drank, drench; dint, dent; doom, deem;
goose, pl. geese; beef, OF. boef, L. bos; and E. cheer,
OF. chiere, LL. cara.

Note: The letter e has in English several vowel sounds, the
two principal being its long or name sound, as in eve,
me, and the short, as in end, best. Usually at the end
of words it is silent, but serves to indicate that the
preceding vowel has its long sound, where otherwise it
would be short, as in m[=a]ne, c[=a]ne, m[=e]te, which
without the final e would be pronounced m[a^]n, c[a^]n,
m[e^]t. After c and g, the final e indicates that these
letters are to be pronounced as s and j; respectively,
as in lace, rage. See Guide to Pronunciation,
[sect][sect] 74-97.

2. (Mus.) E is the third tone of the model diatonic scale.
E[flat] (E flat) is a tone which is intermediate between D
and E.

A Latin prefix meaning out, out of, from; also, without. See

Synonyms: 2.718282..., atomic number 99, due east, east, einsteinium, Es, tocopherol, vitamin E

See Also: alphabetic character, alpha-tocopheral, antioxidant, cardinal compass point, fat-soluble vitamin, irrational number, letter, letter of the alphabet, metal, metallic element, Roman alphabet

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