e¹ or E (ē)
n., pl., e's, or E's, also es, or Es.

1. The fifth letter of the modern English alphabet.
2. Any of the speech sounds represented by the letter e.
3. The fifth in a series.
4. Something shaped like the letter E.
5. E A grade that indicates failing status.
6. Music.
   1. The third tone in the scale of C major or the fifth tone in the relative minor scale.
   2. A key or scale in which E is the tonic.
   3. A written or printed note representing this tone.
   4. A string, key, or pipe tuned to the pitch of this tone.
7. e Mathematics. The base of the natural system of logarithms, having a numerical value of approximately 2.71828.
8. E The hypothesized traditional source of those narrative portions of the Pentateuch in which God is referred to as Elohim rather than with the Tetragrammaton.

[Sense 8, from ELOHIM.]

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The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.

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