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• e
  e

  abbreviation

  electron.
• E
  E

  noun

  the fifth letter of the English alphabet, a vowel.
• e-
  e-

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

  abbreviation

  eldest.
• E.
  E.

  abbreviation

  Earl.
• E-
  E-

  prefix

  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

¹ American  

abbreviation

1. electron.

2. Physics. elementary charge.

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e ² American  

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.

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E ³ American  

[ee] / i /

Or e

noun

• E's,
  plural
• Es,
  plural
• e's,
  plural
• es
  plural

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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E ⁴ American  

abbreviation

1. east.

2. eastern.

3. English.

4. excellent.

5. Expressway.

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E ⁵ American  

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.

5. Physics, Electricity.

   1. electric field

   2. electric field strength.

6. Physics. energy.

7. Biochemistry. glutamic acid.

8. Logic. universal negative.

9. a proportional shoe width size narrower than EE and wider than D.

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e- ⁶ American  

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

   emit.

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e- ⁷ American  

Sometimes E-

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.

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e. ⁸ American  

abbreviation

1. eldest.

2. Football. end.

3. engineer.

4. engineering.

5. entrance.

6. Baseball. error; errors.

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E. ⁹ American  

abbreviation

1. Earl.

2. Earth.

3. east.

4. Easter.

5. eastern.

6. engineer.

7. engineering.

8. English.

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e ¹ British  

symbol

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

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e- ² British  

prefix

1. electronic, indicating the involvement of the internet

   e-business

   e-money

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E- ³ British  

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

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E ⁴ British  

symbol

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

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abbreviation

1. Spain (international car registration)

2. informal the drug ecstasy

E. ⁵ British  

abbreviation

1. Earl

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e ⁶ British  

/ 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

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e- ⁷ British  

prefix

1. out

   eviscerate

   egest

2. away

   elapse

   elongate

3. outside

   evaginate

4. completely

   evaporate

5. without

   ebracteate

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e Scientific  

/ 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.

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e- Cultural  

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.

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Other Word Forms

Noun Inflected Forms

• E's
  plural
• Es
  plural
• e's
  plural
• es
  plural

Etymology

Origin of e-

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

Example Sentences

See Examples For:

e E e- e. E. E- E's Es e's es

The cheese clings to the warm crackers, the pepper blooms in the fat and the whole thing eats like the bar snack version of cacio e pepe.

From Salon ● Jul. 14, 2026

The notion that the nation-state is outdated, and could therefore be replaced with blockchain technology, is one of the reasons h e decided to run to become Liberland's prime minister.

From BBC ● Jul. 10, 2026

The new findings, published in the Journal of Geophysical Research -- Solid Earth, were developed in collaboration with Anna Rosa Corsaro of the Istituto Nazionale di Geofisica e Vulcanologia in Catania.

From Science Daily ● Jul. 10, 2026

The recipes in “The Book of Pizza” go from simpler and more traditional to considerably more creative, culminating in a sourdough Detroit pizza with a cacio e pepe topping.

From The Wall Street Journal ● May 22, 2026

“Raymie Clarke, and there is an e on the end of Clarke!”

From "Louisiana's Way Home" by Kate DiCamillo

Some juicy wordplay: How many words can you make with the letters N, U, E, P, G, and R?

From Slate ● Aug. 5, 2026

People who carry the APOE2 form of the apolipoprotein E gene tend to live longer and have a lower risk of Alzheimer's disease.

From Science Daily ● Jul. 24, 2026

It’s designed to be transit-oriented, as the grounds between the Santa Monica Pier and Bay Street will be steps from the E Line terminus, several major bus routes and a bike valet service.

From Los Angeles Times ● Jul. 16, 2026

E pluribus unum: We are one people with many roots.

From The Wall Street Journal ● Jul. 6, 2026

The order of flats is the reverse of the order of sharps: B flat, E flat, A flat, D flat, G flat, C flat, F flat.

From "Understanding Basic Music Theory" by Catherine Schmidt-Jones and Russel Jones

So, for instance, the prefix er- denotes an external body part, whereas e- denotes an internal one.

From Scientific American ● Apr. 20, 2020

The BLM’s Tres Rios field office has announced that its paths are now open to e- ikes, but many riders access these trailheads by riding on Durango’s trails.

From Washington Post ● Oct. 16, 2019

Meanwhile, e- has taken over as the prefix for those things in the digital world which are less malign - depending, that is, on your feelings about email.

From BBC ● May 19, 2017

RADDATZ: And, Secretary Clinton, I do want to follow up on e- mails.

From Los Angeles Times ● Oct. 9, 2016

“It plays DVDs,” he said, “and if I had an e- mail account, I could check it on this, too.”

From "Extremely Loud and Incredibly Close" by Jonathan Safran Foer

"We're looking for two different types of bacteria, e. coli and intestinal enterococci," says Jonathan Porter, a microbiologist at the Environment Agency.

From BBC ● May 12, 2024

The diagnosis was based on established assessments that included e. g. memory and language tasks.

From Science Daily ● Mar. 27, 2024

And a lot of people, not just the Gilbreths, were very worried that the “best women” i. e. highly educated women were not reproducing.

From Scientific American ● Sep. 21, 2023

"Kangaroo meat is known to be contaminated on occasion with Salmonella spp, high levels of e. coli, Toxoplasmosis, and Listeria, and Coxiella," Ben-Ami told Salon by email.

From Salon ● Nov. 21, 2020

I told Mary Elizabeth that I was sorry and how much I really loved the e. e. cummings book and wanted to ask her questions about it.

From "The Perks of Being a Wallflower" by Stephen Chbosky

Of these, 16 proved effective at killing E. coli bacteria.

From BBC ● Aug. 6, 2026

Researchers tested ruptoblasts against E. coli bacteria, human kidney cells, and mouse blood cells.

From Science Daily ● Aug. 5, 2026

He helped steer the company through the Covid-19 pandemic, as well as a 2024 outbreak of E. coli tied to onions served on the company’s Quarter Pounders.

From The Wall Street Journal ● Aug. 4, 2026

Oh, yeah: I think I saw a guy who looked like Kevin Hassett dressed as Alfred E. Neuman.

From Salon ● Jul. 31, 2026

Most Americans date the end of the Civil War with the rendezvous, two weeks earlier, of Generals Robert E. Lee and Ulysses S. Grant at Appomattox Courthouse.

From "The Best of Enemies" by Osha Gray Davidson

The agreements cover roughly 800 workers at the InterContinental, Hotel Indigo and E- Central in downtown L.A. — and the Sheraton Gateway LAX.

From Los Angeles Times ● Dec. 22, 2023

"We had narrowed down the selections to a bunch of E- names, but we couldn't ultimately decide," says Conley, who lives in New York.

From BBC ● Apr. 11, 2014

Suppose the null hypothesis, H0, is: the sample does not contain E- coli.

From Textbooks ● Sep. 19, 2013

The ballroom-dance competition reality show will have glitter, spandex, spray tans and Drama with a capital D as the show’s professional dancers whip a crop of E- and F- List stars into semi-professional samba dancers.

From Time ● May 16, 2013

Tullie also by his E- loquence and wisedome, saued Roome and all partes of that dominion, from greate daungers.

From A booke called the Foundacion of Rhetorike because all other partes of Rhetorike are grounded thereupon, euery parte sette forthe in an Oracion vpon questions, verie profitable to bee knowen and redde by Richard Rainolde

Heliodoro Moreno, E’s attorney, said the California Attorney General’s Office confirmed to him in February that it was investigating.

From Los Angeles Times ● Nov. 12, 2025

As visitors enter and lie down, these mobiles spin slowly, catching light and casting morphing shadows of cursive E’s and wishbones.

From New York Times ● Apr. 17, 2024

Seetoo told The Times on Tuesday that she believes the “three E’s, and that is enforcement, education and engineering,” are needed to make the highway safe.

From Los Angeles Times ● Feb. 1, 2024

Mr Johnson said this was "a head on credibility contest" and either Child E's mother was "lying" or Ms Letby was "lying".

From BBC ● Jun. 19, 2023

He looked down at Katherine’s list, which was full of JB’s and E’s.

From "Found" by Margaret Peterson Haddix

About 60% of the U.S. population report a preference for introversion, according to Myers-Briggs Co., the company known for a personality-assessment test that begins by separating the Is from the Es.

From The Wall Street Journal ● Dec. 23, 2025

His latest project, “Mi Suerte Es Ser Mexicano,” is nominated for ranchero/mariachi album.

From Los Angeles Times ● Oct. 14, 2025

How would you describe the experience of burying the beef with Bellakath for your next single “Él No Es Tuyo”? It was time.

From Los Angeles Times ● Feb. 20, 2025

The first triple E outbreak on record occurred in Massachusetts in the 1830s in horses — the reason one of the three Es stands for “equine.”

From Salon ● Sep. 7, 2024

“Ah, si. Es muy buena gente,” Mama said, finally recalling who he was.

From "The Circuit: Stories from the Life of a Migrant Child" by Francisco Jiménez

My mother wound up spelling it with two e’s.

From The Wall Street Journal ● May 19, 2026

Morgan Stanley highlighted Ford Energy as a key driver for Model e’s profitability, potentially boosting investor interest.

From Barron's ● May 13, 2026

They need three rules just to handle the e’s in eleven.

From Scientific American ● Sep. 26, 2023

“Make the bracelet you really want to make first before you run out of letters. As you run out of letters, make lists of songs that don’t have e’s in them,” Ragland advised.

From Los Angeles Times ● Aug. 1, 2023

If you use three e’s, you’ll get it right.

From "Woe Is I" by Patricia T. O'Conner

Najma Issa, 40, tells the BBC while shopping at Ilala market, a second-hand clothing hub in Dar es Salaam: "Most of the clothes have good quality... they last long."

From BBC ● May 23, 2026

Museveni studied in Dar es Salaam, Tanzania, in the 1960s when the university acted as a kind of revolutionary finishing school for anti-colonialists.

From Barron's ● Jan. 12, 2026

In recent years, the company acquired terminals in Haifa, Israel; Tanzania’s Port of Dar es Salaam; Sri Lanka’s Port of Colombo; and a coal-export hub in North Queensland, Australia.

From The Wall Street Journal ● Jan. 9, 2026

Simba have struggled at the national stadium in Dar es Salaam, drawing both qualifiers there, and the Group D loss is an early setback.

From Barron's ● Nov. 23, 2025

“Didn’t I tell you? Rafa grounded him. Mayor got into a scuffle at school, and Rafa flew off the handle as usual. Él es tan rabioso.”

From "The Book of Unknown Americans" by Cristina Henríquez