epsilon

noun

ep·si·lon | \ˈep-sə-ˌlän,

-lən\

Definition of epsilon

1 : the 5th letter of the Greek alphabet — see Alphabet Table

2 : an arbitrarily small positive quantity in mathematical analysis

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Based on the Greek letter epsilon, the euro symbol represents the coming together of nations. — Patrick Di Justo, WIRED, "Europe on €10 a Day," 1 Jan. 2002

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'epsilon.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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Dictionary Entries near epsilon

Epsilon Ursae Majoris

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Time Traveler for epsilon

The first known use of epsilon was in the 15th century

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