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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. 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- ³ British  

prefix

1. electronic, indicating the involvement of the internet

   e-business

   e-money

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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  

prefix

1. out

   eviscerate

   egest

2. away

   elapse

   elongate

3. outside

   evaginate

4. completely

   evaporate

5. without

   ebracteate

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e ⁷ 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 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

Morgan Stanley wrote a positive note about Ford Energy on Tuesday evening, calling it an “Underappreciated driver of Model e path to profitability.”

From Barron's ● May 13, 2026

Spring brings risi e bisi, the classic Venetian rice-and-peas dish; autumn meant bigoli con l’anatra, a spaghetti-like pasta with duck ragù.

From The Wall Street Journal ● May 2, 2026

I still use it to check my spelling when I come across words that have an e and an / next to each other.

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

The US Supreme Court on Monday rejected for a second time President Donald Trump's attempt to overturn a jury judgment that he sexually assaulted and defamed writer E Jean Carroll.

From Barron's ● Aug. 17, 2026

"I would actually argue Formula E has the best racing that you can view anywhere."

From BBC ● Aug. 15, 2026

In April, JPMorgan offered wealth-management clients the ability to participate in Polymarket’s Series E fundraising that would value the company at $14.5 billion, according to a person familiar with the matter.

From The Wall Street Journal ● Aug. 14, 2026

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

From Slate ● Aug. 5, 2026

In a C major chord, for example, that would be any C naturals, E naturals, and G naturals.

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

Brune said it felt like the real thing: “Even though it was all e- and technology, we still had plenty of times to accuse each other of cheating like we usually do.”

From Slate ● Mar. 31, 2020

Executives hope it will prove to be a not-so-secret weapon against competitors Alibaba and Amazon, which are also racing to develop the next generation of e- commerce super machines.

From Washington Post ● Sep. 9, 2018

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

“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

Mary Elizabeth came to school with a book of poems by a famous poet named e. e. cummings.

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

"As a result, the jury's unanimous verdict that Donald Trump sexually assaulted and then defamed E. Jean Carroll is now final and cannot be challenged in any court," she added.

From BBC ● Aug. 17, 2026

This isn’t the company’s first rodeo: Taco Bell faced a serious E. coli incident in December 2006, with some customers suffering kidney failure.

From The Wall Street Journal ● Aug. 10, 2026

Assistant Chief Emada E. Tingirides, director of the Office of Operations, ultimately will decide which vehicles follow, according to Field.

From Los Angeles Times ● Aug. 10, 2026

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

From Science Daily ● Aug. 5, 2026

Rather than consuming both sugars equally, the E. coli cells had selectively consumed glucose first.

From "The Gene" by Siddhartha Mukherjee

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

In addition, there is a great need for "charity work" in preparing E- texts.

From Email 101 by John Goodwin

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

Mr Harvey said no link was drawn between Baby E's death and the three deaths in June that year.

From BBC ● Nov. 28, 2024

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

She had stuck around while E’s aunties and mom and family friends dressed her in her Osage clothes.

From "Legendary Frybread Drive-In" by Cynthia Leitich Smith

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

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

But finishing hot on the Latin charts is also “Si No Es Contigo,” where Cris MJ riffs his breathy voice over a sultry urban beat.

From Los Angeles Times ● Dec. 31, 2024

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

An enemy Mirage III Es sharks through a skyful of Seacats and Seawolfs and Sea Slugs.

From "Black Swan Green" by David Mitchell

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

No mistaking her u's for n’s or her is for e's.

From "The View From Saturday" by E.L. Konigsburg

Ambient audio in Walker’s footage captures someone saying: “Este es el acceso de colaboradores.”

From The Wall Street Journal ● Aug. 12, 2026

A Russia-Tanzania Business Council was created in January and last month Air Tanzania announced the launch of flights from Dar es Salaam to Moscow by the end of the year.

From Barron's ● Jun. 3, 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

“You know whut gwine happen soon es dey start playin dat ball over yonder,” Luster said.

From "The Sound and the Fury" by William Faulkner