E's

E, e

[ee]
noun, plural E's or Es, e's or es.
1.
the fifth letter of the English alphabet, a vowel.
2.
any spoken sound represented by the letter E or e, as in met, meet, mere, etc.
3.
something having the shape of an E .
4.
a written or printed representation of the letter E or e.
5.
a device, as a printer's type, for reproducing the letter E or e.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Science Dictionary
e   (ē)  Pronunciation Key 
An irrational number, with a numerical value of 2.718281828459.... It is mathematically defined as the limit of (1 + 1/n )n as n grows infinitely large. It is the base of natural logarithms and has many applications in mathematics, especially in expressions involving exponential growth and decay.
E  
  1. The symbol for energy.

  2. The symbol for modulus of elasticity.


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