Epsilon
WordNet
noun
(1) The 5th letter of the Greek alphabet
WiktionaryText
Etymology
From .
Noun
- The name for the fifth letter of the Greek alphabet, ε or Ε, preceded by delta (Δ, δ) and followed by zeta (Ζ, ζ).
- In IPA, the phonetic symbol that represents the open-mid front unrounded vowel; represented in SAMPA as E.
- An arbitrarily small quantity.
- A negligible effect.
- Yes, we have to convert all the symbol names to upper case at startup, but that’s epsilon.