Word.ws English Dictionary

epsilon

Syllables: ep·si·lonUK/ɛpˈsaɪ.lən//ˈɛp.sɪˌlɑn/

epsilon noun: the fifth letter of the Greek alphabet, ε or Ε, preceded by delta (Δ, δ) and followed by zeta (Ζ, ζ).

epsilon: the fifth letter of the Greek alphabet, ε or Ε, preceded by delta (Δ, δ) and followed by zeta (Ζ, ζ)
Image: Mrmw, Vladsinger, Public domain, via Wikimedia Commons

Noun

epsilon (countable and uncountable, plural epsilons or epsila)

  1. The fifth letter of the Greek alphabet, ε or Ε, preceded by delta (Δ, δ) and followed by zeta (Ζ, ζ).
  2. In IPA, the phonetic symbol ɛ that represents the open-mid front unrounded vowel.
  3. An arbitrarily small quantity.
    1. (colloquial) A small child.
  4. (colloquial) Something negligible or insignificant.
    • Yes, we have to convert all the symbol names to upper case at startup, but that’s epsilon.
    • All right, okay. My interest is epsilon.2017, Dean Koontz, The Silent Corner, page 106
  5. The percentage change in an option value with respect to the underlying dividend yield.

epsilon meaning in Marathi, Tagalog, Arabic and Malay

epsilon in Marathi

name for the fifth letter of the Greek alphabet
एप्सिलॉन epsilŏn

epsilon in Tagalog

name for the fifth letter of the Greek alphabet
epsilon

epsilon in Arabic

name for the fifth letter of the Greek alphabet
إِبْسِلُون ʔibsilūn, إِبْسِيلُون ʔibsilūn

epsilon in Malay

name for the fifth letter of the Greek alphabet
epsilon
More languagesFewer languages
epsilon in Persian
اپسیلون epsilon
epsilon in Thai
เอปไซลอน ép-sai-lɔ̂n

Forms of epsilon

pluralepsilons
pluralepsila

Plural of epsilon: epsilons or epsila

Origin of epsilon

From Ancient Greek ἒ ψιλόν (è psilón, “simple Ε”).

Words formed from epsilon

Phrases with epsilon

Questions about epsilon

What does epsilon mean?
Epsilon means the fifth letter of the Greek alphabet, ε or Ε, preceded by delta (Δ, δ) and followed by zeta (Ζ, ζ).
What is epsilon in Marathi?
Epsilon in Marathi is एप्सिलॉन (epsilŏn). See Epsilon meaning in Marathi.
What part of speech is epsilon?
Epsilon is a noun.
How do you pronounce epsilon?
Epsilon is pronounced /ɛpˈsaɪ.lən/ (UK).
What is the plural of epsilon?
The plural of epsilon is epsilons.

Words near epsilon in the dictionary

  1. Epshteyn
  2. epsila
  3. epsilometer
  4. epsilometers
  5. epsilometric
  6. epsilon
  7. epsilon iron
  8. epsilon number
  9. epsilon numbers
  10. Epsilon Pegasi
  11. Epsilon Ursae Majoris

Source and license

Adapted from Wiktionary: epsilon (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: En-us-epsilon.ogg.

Cite this entry: “epsilon.” Word.ws, https://word.ws/epsilon. Based on Wiktionary, CC BY-SA 4.0.