noun
epsilon
ehp-SEYE-luhn
Epsilon (noun) means the fifth letter of the Greek alphabet (ε, Ε), between delta and zeta. Example: “The professor labeled the angle epsilon in her diagram.”
noun
1
The fifth letter of the Greek alphabet (ε, Ε), between delta and zeta.
"The professor labeled the angle epsilon in her diagram."
2
Math/science: a symbol for an arbitrarily small positive quantity.
"For any epsilon greater than zero, we can find a value of n that satisfies the inequality."
How to use epsilon
Learner’s notesIn plain EnglishA Greek letter, often used in math to mean "a tiny amount."
Common pairings
epsilon greater than zero
the letter epsilon
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Word forms
- Plural
- epsilons, epsila
Fill the gap
Can you complete this real example?
The professor labeled the angle _____ in her diagram.
Etymology
From Greek e psilón, "plain e" — distinguishing it from the diphthong sound written with other letters.
Rhymes for epsilon
See all rhymes for epsilon →Frequently asked questions
What does “epsilon” mean?
The word “epsilon” means the fifth letter of the Greek alphabet (ε, Ε), between delta and zeta. In plain terms, a Greek letter, often used in math to mean "a tiny amount.".
How do you pronounce “epsilon”?
“Epsilon” is pronounced ehp-SEYE-luhn (/ˈɛp.sɪˌlɑn/ in IPA).
How do you use “epsilon” in a sentence?
Here is “epsilon” used in a sentence: “The professor labeled the angle epsilon in her diagram.”
What part of speech is “epsilon”?
“Epsilon” is a noun.
Where does the word “epsilon” come from?
The word “epsilon” comes from Greek. From Greek e psilón, "plain e" — distinguishing it from the diphthong sound written with other letters.
How many meanings does “epsilon” have?
“Epsilon” has 2 distinct senses listed in this dictionary. The most common is: the fifth letter of the Greek alphabet (ε, Ε), between delta and zeta.
