SINCE 1828
epsilon
noun
ep·si·lon
| \ ˈep-sə-ˌlän
, -lən\
, -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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Other Words from epsilon
epsilonic
\ ˌep-sə-ˈlä-nik
\
adjective
\
adjective
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From the Editors at Merriam-Webster
How the Greeks Influenced Our Alphabet
How the Greeks Influenced Our Alphabet
An excerpt from 'Greek to Me' by Mary Norris
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The first known use of epsilon was in the 15th century
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