Share this entry

Share this page

epsilon

Syllabification: ep·si·lon
Pronunciation: /ˈepsiˌlän
 
/

Definition of epsilon in English:

noun

1The fifth letter of the Greek alphabet (Ε, ε), transliterated as ‘e.’.
1.1 [as modifier] Denoting the fifth in a series of items, categories, etc.
1.2 (Epsilon) [followed by Latin genitive] Astronomy The fifth star in a constellation: Epsilon Carinae
More example sentences
  • The most likely destinations are the stars closest to Earth, such as Alpha Centauri and Proxima Centauri, Tau Ceti, and Epsilon Eridani.
  • The star Epsilon Eridani, 10 light years from Earth, was then found to have exactly the disc clumps predicted by the computer models.
  • The University of Texas team found a planet similar in size to Jupiter about 10.5 light years away from Earth orbiting the star Epsilon Eridani, a star very similar to the sun.

symbol

(ε) Back to top  

Origin

early 18th century: Greek, 'plain or simple E', from psilos 'plain', referring to the need to distinguish epsilon from the diphthong ai: in late Greek the two had the same pronunciation.

Words that rhyme with epsilon

nylonOrlon

Definition of epsilon in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day snarf
Pronunciation: snärf
verb
eat or drink quickly or greedily