# e

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### Pronunciation

•  Audio (UK) (file)
•  Audio (UK) (file)
phoneme
• IPA (key): /E/ or /iː/ or silent
letter name

## Noun

 LetterE or e

.

The letter E
1. E is the fifth letter of the alphabet, and is the most common vowel and letter used in the English language.
"d" comes before "e"
2. (mathematics) The constant e is a real number that has formula ${\displaystyle \mathrm {e} =\lim _{n\to \infty }\left(1+{\frac {1}{n}}\right)^{n}}$, and is approximately 2.718281828.

## See also

 Letters of the Alphabet A a - B b - C c - D d - E e - F f - G g - H h - I i - J j - K k - L l - M m N n - O o - P p - Q q - R r - S s - T t - U u - V v - W w - X x - Y y - Z z