noun Etymology: Greek e psilon, literally, simple e 1. the 5th letter of the Greek alphabet — see alphabet table 2. an arbitrarily small positive quantity in mathematical analysis • epsilonic adjective
A macro language with high level features including strings and lists, developed by A.P. Ershov at Novosibirsk in 1967. EPSILON was used to implement ALGOL 68 on the M-220.
1. The fifth letter of the Greek alphabet. 2. (From the Hungarian mathematician Paul Erdos) A very small, insignificant, or negligible quantity of something. The use of epsilon is from the epsilon-delta method of proof in differential calculus.