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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  

prefix

1. electronic, indicating the involvement of the internet

   e-business

   e-money

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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  

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 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 first sheet becomes the main course: four crisp, savory egg tarts with pancetta, pecorino and enough black pepper to evoke cacio e pepe.

From Salon ● Jul. 20, 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

Rossi’s publication of books of Sinfonie e gagliarde in 1607 and 1608 are among the earliest printed references to the sinfonia as a distinct form.

From "The Story of Music" by Howard Goodall

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

But Mom was expecting that I’d literally watch my little sister, not hand her over to the E Motions owner, so maybe I should check.

From "Maybe He Just Likes You" by Barbara Dee

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

From Scientific American ● Apr. 20, 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

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 go to my room and get online and start reading about e. e. cummings.

From "Will Grayson, Will Grayson" by John Green and David Levithan

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

Samples taken from the water are tested in a lab for elevated levels of E. Coli and intestinal enterococci.

From BBC ● Aug. 1, 2026

He noted, for instance, the E. coli outbreak in spinach in 2006 dampened sales for years.

From The Wall Street Journal ● Jul. 31, 2026

A battle raged between two titans: the professor Booker T. Washington and the brilliant, mercurial, and quarrelsome W. E. B. Du Bois.

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

E-, a purely phonetic addition, of French origin, as in esquire, estate, eschew, especial, escutcheon.

From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various

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

And R's never look like backward E's to Freak, which is the way they look to me sometimes, unless I really squint and think about it.

From "Freak The Mighty" by Rodman Philbrick

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

"The idea is to allow people to instantly seek help to navigate relationships because not everyone can talk to friends or family for fear of judgment," says New York-based founder Es Lee.

From BBC ● Oct. 2, 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

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

“A’s and e’s and l’s are tricky, because they could be lots of different letters,” Emma explained weakly, pointing to her own scribblings.

From "The Strangers" by Margaret Peterson Haddix

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

Kimambi already faces charges of economic sabotage, which came up in court in Dar es Salaam on Thursday.

From BBC ● Dec. 4, 2025

“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