[yoo-ree-kuh, yuh-]
(initial capital letter) I have found (it): the reputed exclamation of Archimedes when, after long study, he discovered a method of detecting the amount of alloy mixed with the gold in the crown of the king of Syracuse.
(used as an exclamation of triumph at a discovery.)

1560–70; < Greek heúrēka, 1st person singular perfect indicative of heurískein to find, discover Unabridged


[yoo-ree-kuh, yuh-]
a city in NW California. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To Eureka
World English Dictionary
eureka (jʊˈriːkə)
an exclamation of triumph on discovering or solving something
[C17: from Greek heurēka I have found (it), from heuriskein to find; traditionally the exclamation of Archimedes when he realized, during bathing, that the volume of an irregular solid could be calculated by measuring the water displaced when it was immersed]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Word Origin & History

c.1600, from Gk. heureka "I have found (it)," first pers. sing. perfect active indicative of heuriskein "to find." Supposedly shouted by Archimedes (c.287-212 B.C.E.) when he solved a problem that had been set to him: determining whether goldsmiths had adulterated the metal in the crown of Hiero II,
king of Syracuse.
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Computing Dictionary

Eureka definition

A European technological development programme.

The Free On-line Dictionary of Computing, © Denis Howe 2010
Cite This Source
Encyclopedia Britannica


county, central Nevada, U.S. It is drained by the Humboldt River and Pine Creek. The Sulphur Springs, Fish Creek, and Cortez ranges cover the largely mountainous and arid area; the county is sparsely populated.

Learn more about Eureka with a free trial on

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature