noun Etymology: Greek e psilon, literally, simple e Date: 15th century the 5th letter of the Greek alphabet, an arbitrarily small positive quantity in mathematical analysis, ~ic adjective
EPSILON
Meaning of EPSILON in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012