# Definitions for epsilonˈɛp səˌlɒn, -lən; esp. Brit. ɛpˈsaɪ lən

### Princeton's WordNetRate this definition:(0.00 / 0 votes)

1. epsilon(noun)

the 5th letter of the Greek alphabet

### WiktionaryRate this definition:(0.00 / 0 votes)

1. epsilon(Noun)

The name for the fifth letter of the Greek alphabet, u03B5 or u0395, preceded by delta (u0394, u03B4) and followed by zeta (u0396, u03B6).

2. epsilon(Noun)

In IPA, the phonetic symbol that represents the open-mid front unrounded vowel; represented in SAMPA as E.

3. epsilon(Noun)

An arbitrarily small quantity.

4. epsilon(Noun)

A negligible effect.

Yes, we have to convert all the symbol names to upper case at startup, but thatu2019s epsilon.

5. Origin: From ἒψιλόν.

### FreebaseRate this definition:(0.00 / 0 votes)

1. Epsilon

Epsilon is the fifth letter of the Greek alphabet, corresponding phonetically to a close-mid front unrounded vowel. In the system of Greek numerals it has a value of 5. It was derived from the Phoenician letter He . Letters that arose from Epsilon include the Roman E and Cyrillic Е. The name "epsilon" was coined in the Middle Ages to distinguish the letter from the digraph αι, a former diphthong that had come to be pronounced the same as epsilon. The uppercase form of epsilon looks essentially identical to Latin E. The lowercase version has two typographical variants, both inherited from medieval Greek handwriting. One, the most common in modern typography and inherited from medieval minuscule, looks like a reversed "3". The other, also known as lunate or uncial epsilon and inherited from earlier uncial writing, looks like a semicircle crossed by a horizontal bar. While in normal typography these are just alternate font variants, they may have different meanings as mathematical symbols. Computer systems therefore offer distinct encodings for them. In Unicode, the character U+03F5 "Greek lunate epsilon symbol" is provided specifically for the lunate form. In TeX, \epsilon denotes the lunate form, while \varepsilon denotes the inverted-3 form.

### The New Hacker's DictionaryRate this definition:(0.00 / 0 votes)

1. epsilon

[see delta] 1. n. A small quantity of anything. “The cost is epsilon.” 2. adj. Very small, negligible; less than marginal. “We can get this feature for epsilon cost.” 3. within epsilon of: close enough to be indistinguishable for all practical purposes, even closer than being within delta of. “That's not what I asked for, but it's within epsilon of what I wanted.” Alternatively, it may mean not close enough, but very little is required to get it there: “My program is within epsilon of working.”

# Translations for epsilon

### From our Multilingual Translation Dictionary

• إبسلون, إبسيلون
• èpsilon
• epsilon
• Epsilon
• έψιλον
• épsilon
• اپسیلون
• epsilon
• epsilon
• épsilon
• epsilon
• epsilon
• エプシロン
• 엡실론
• एप्सिलॉन
• epsilon
• epsilon, kleinigheid
• épsilon, épsilo
• эпсилон
• epsilon
• epsilon

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"epsilon." Definitions.net. STANDS4 LLC, 2015. Web. 5 Mar. 2015. <http://www.definitions.net/definition/epsilon>.