e-

US/ɛ-//i-/

prefix

Used to form terms with the sense of something being absent, being removed, or moving outward.

“e-stop, e-brake”

Similar
ex-
OriginLatin ex- ← Proto-Italic *eks ← Proto-Indo-European *h₁éǵʰs →
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Meanings

e-1

prefix
  1. idiomaticUsed to form terms with the sense of something being absent, being removed, or moving outward.

    e.g. eluviation, edentulous, elenge

    Synonyms: ex-

e-2

prefix
  1. In an electronic form, especially computerized and digital; often in association with the Internet.

e-3

prefix
  1. For emergency purposes.

    e-stop, e-brake

e-4

prefix
  1. businessUsed to prefix product names, to indicate an electrified or all-electric variant of the product, particularly cars.
    1. businessUsed to prefix product names, to indicate a battery-powered or onboard electric power source variant.
  2. Electric.

    e-stim

e-5

prefix
  1. businessUsed to prefix items that are embedded into devices, instead of being discrete or removable elements.

e-6

prefix
  1. educational

E-7

prefix
  1. alternativeAlternative form of e-.

Synonyms & antonyms

prefixUsed to form terms with the sense of something being absent, being removed, or moving outward.

Similar
ex-

Origin

e- · prefix

  1. Proto-Indo-European*h₁éǵʰ
  2. Proto-Indo-European*h₁éǵʰs
  3. Proto-Italic*eks
  4. Latinex
  5. Latinex-
  6. Englishe-

From Latin ē-.

More words from Latin

Full word history & related roots →

e- · prefix

  1. Ancient Greekἤλεκτρον (ḗlektron)
  2. Latinēlectrum
  3. New Latinēlectricus
  4. Englishelectric
  5. Proto-Indo-European*h₁ey-
  6. Proto-Indo-European*h₁éyti
  7. Proto-Hellenic*éimi
  8. Ancient Greekἰόν (ión)
  9. Englishion
  10. Englishelectron
  11. Englishelectronic
  12. Englishe-

Abbreviation of electronic.

Full word history & related roots →

e- · prefix

  1. Latinēmergō
  2. Latinemergens
  3. Englishemergency
  4. Englishe-

Abbreviation of emergency.

Full word history & related roots →

e- · prefix

  1. Ancient Greekἤλεκτρον (ḗlektron)
  2. Latinēlectrum
  3. New Latinēlectricus
  4. Englishelectric
  5. Englishe-

Abbreviation of electric or electrical.

Full word history & related roots →

e- · prefix

  1. Proto-Indo-European*h₁én
  2. Proto-Italic*en
  3. Proto-Italic*en-
  4. Latinin-
  5. Old Frenchen-
  6. Middle Englishen-
  7. Englishem-
  8. Proto-Germanic*badją
  9. Proto-West Germanic*badi
  10. Old Englishbedd
  11. Middle Englishbed
  12. Englishbed
  13. Englishembed
  14. Englishembedded
  15. Englishe-

Abbreviation of embedded.

Full word history & related roots →

e- · prefix

  1. Proto-Indo-European*h₁éǵʰ
  2. Proto-Indo-European*h₁éǵʰs
  3. Proto-Italic*eks
  4. Latinex
  5. Latinex-
  6. Proto-Indo-European*dewk-
  7. Proto-Indo-European*déwkti
  8. Proto-Italic*doukō
  9. Latindūcō
  10. Latindux
  11. Latinēducō
  12. Latinēducātiō
  13. Englisheducation
  14. Proto-Indo-European*h₂el-
  15. Proto-Indo-European*h₂élisder.?
  16. Englisheducational
  17. Englishe-

Abbreviation of educational.

Full word history & related roots →

Translations

French e-, E-
  • e-Translations
  • E-Translations
  • cyber-Translations
Polish e-
  • e-Translations
Portuguese e-
  • e-Translations
Cite this entry
APA

e-. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/e-

MLA

“e-.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/e-. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “e-,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/e-.

Source: e- on Wiktionary, CC BY-SA 4.0.