Definition of epsilons:
(n) :
(mathematics) An arbitrarily small quantity.
(n) :
The fifth letter of the Greek alphabet, ε or Ε, preceded by delta (Δ, δ) and followed by zeta (Ζ, ζ).
(n) :
(phonetics) In IPA, the phonetic symbol ɛ that represents the open-mid front unrounded vowel.
(n) :
(computing, colloquial) Something negligible or insignificant.
(n) :
(finance) The percentage change in an option value with respect to the underlying dividend yield.
(n) :
(colloquial) A small child.