E

E¹

(also e)

noun (plural Es or E's)

1》 the fifth letter of the alphabet.

2》 denoting the fifth in a set.

3》 Music the third note of the diatonic scale of C major.

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E²

abbreviation

1》 East or Eastern.

2》 informal the drug Ecstasy or a tablet of Ecstasy.

3》 denoting products, in particular food additives, which comply with EU regulations. See also E-number.

4》 exa- (10¹⁸).

5》 Spain (international vehicle registration). [from Sp. España.]

symbol Physics

1》 electric field strength.

2》 energy.