e

¹

abbreviation for

1. electron.
2. Physics. elementary charge.

E

²

or 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.

e-

³

1. variant of ex- ¹ occurring in words of Latin origin before consonants other than c, f, p, q, s, and t: :

   emit.

e

⁴

Symbol.

1. Mathematics. a transcendental constant equal to 2.7182818 …, used as the base of natural logarithms; the limit of the expression (1+1/ n ) n as n approaches infinity.
2. Logic. universal negative.

E

⁵

abbreviation for

1. east.
2. eastern.
3. English ( def 5 ).
4. excellent.
5. Expressway.

e-

⁶

1. electric:

   e-bike.

2. electronic:

   e-book;

   e-cigarette.

3. on the internet; online:

   e-content;

   e-commerce.

4. involving electronic data transfer, especially over the internet:

   e-banking.

E

⁷

Symbol.

1. the fifth in order or in a series.
2. (sometimes lowercase) (in some grading systems) a grade or mark, as in school or college, indicating the quality of a student's work is in need of improvement in order to be passing.
3. Music.
   1. the third tone in the scale of C major or the fifth tone in the relative minor scale, A minor.
   2. a string, key, or pipe tuned to this tone.
   3. a written or printed note representing this tone.
   4. (in the fixed system of solmization) the third tone of the scale of C major, called mi.
   5. the tonality having E as the tonic note.
4. (sometimes lowercase) the medieval Roman numeral for 250. Compare Roman numerals.
5. Physics, Electricity.
   1. electric field
   2. electric field strength.
6. Physics. energy ( def 8 ).
7. Biochemistry. glutamic acid.
8. Logic. universal negative.
9. a proportional shoe width size narrower than EE and wider than D.

e.

⁸

abbreviation for

1. eldest.
2. Football. end.
3. engineer.
4. engineering.
5. entrance.
6. Baseball. error; errors.

E.

⁹

abbreviation for

1. Earl.
2. Earth.
3. east.
4. Easter.
5. eastern.
6. engineer.
7. engineering.
8. English.

e

¹

symbol for

1. maths a transcendental number, fundamental to mathematics, that is the limit of (1 + 1 /n ) n as n increases to infinity: used as the base of natural logarithms. Approximate value: 2.718 282…; relation to π: e ^πi= –1, where i = √–1
2. electron
3. chess See algebraic notation

E-

²

prefix

1. used with numbers indicating a standardized system within the European Union, as of recognized food additives or standard pack sizes See also E number

E

³

symbol for

1. earth
2. East
3. English
4. Egypt(ian)
5. exa-
6. music
   1. a note having a frequency of 329.63 hertz ( E above middle C ) or this value multiplied or divided by any power of 2; the third note of the scale of C major
   2. a key, string, or pipe producing this note
   3. the major or minor key having this note as its tonic
7. physics
   1. energy
   2. electric field strength
   3. electromotive force
   4. Young's modulus (of elasticity)
8. logic a universal negative categorical proposition, such as no pigs can fly: often symbolized as SeP Compare A I 2 O 1
9. 1. a person without a regular income, or who is dependent on the state on a long-term basis because of unemployment, sickness, old age, etc
   2. ( as modifier ) See also occupation groupings

      E worker

abbreviation for

1. Spain (international car registration)
2. informal.
   the drug ecstasy

E.

⁴

abbreviation for

1. Earl

e

⁵

/ iː /

noun

1. the fifth letter and second vowel of the modern English alphabet
2. any of several speech sounds represented by this letter, in English as in he, bet, or below

e-

⁶

prefix

1. electronic, indicating the involvement of the internet

   e-money

   e-business

e-

⁷

prefix forming verbs and verbal derivatives

1. out

   egest

   eviscerate

2. away

   elongate

   elapse

3. outside

   evaginate

4. completely

   evaporate

5. without

   ebracteate

e

/ ē /

1. 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. A prefix that stands for “electronic” and refers to information technologies, business, and almost anything connected to or transmitted over the Internet . Some examples of its use include e-business, e-commerce, e-book, and e-mail.

Word History and Origins

Origin of e¹

First recorded in 1985–90; shortening of electronic ( def )

Word History and Origins

Origin of e¹

(sense 8) from Latin ( n ) e ( go ) I deny

Origin of e²

from Latin ē away; related to ex- ¹