ePsiLoN definition

epsilon, n. (pl. epsilons):

  1. The name for the fifth letter of the Greek alphabet, ε or Ε
  2. An arbitrarily (or nearly so) small positive quantity
  3. The precision of a numeric data type and floating-point
  4. The name for Uranus' most distant and most visible ring
  5. An alias for little kids (ref. Paul Erdos)