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A city of northwest California on Humboldt Bay, an arm of the Pacific Ocean. Lumbering, fishing, and tourism are important to its economy.


Used to express triumph upon finding or discovering something.

[Greek heurēka, I have found (it) (supposedly exclaimed by Archimedes upon discovering how to measure the volume of an irregular solid and thereby determine the purity of a gold object), first person sing. perfect tense of heuriskein, to find.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


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 and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(yʊˈri kə, yə-)

1. (used as an exclamation of triumph at a discovery.)
2. (cap.) I have found (it): the reputed exclamation of Archimedes when he discovered a test, based on the principle of buoyancy, for the purity of gold.
[1560–70; < Greek heúrēka, 1st person singular perf. indic. of heurískein to find, discover]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


A word exclaimed when someone discovers something, from an ancient Greek word meaning I have found it.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.eureka - an alloy of copper and nickel with high electrical resistance and a low temperature coefficientEureka - an alloy of copper and nickel with high electrical resistance and a low temperature coefficient; used as resistance wire
copper-base alloy - any alloy whose principal component is copper
2.Eureka - a town in northwest California on an arm of the Pacific Ocean
Calif., California, Golden State, CA - a state in the western United States on the Pacific; the 3rd largest state; known for earthquakes
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


[jʊəˈriːkə] EXCL¡eureka!
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005


[jʊˈriːkə] excleurêka
Collins English/French Electronic Resource. © HarperCollins Publishers 2005


Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
References in classic literature ?
A Faithful Record of Their Amazing Adventures in an Underground World; and How with the Aid of Their Friends Zeb Hugson, Eureka the Kitten, and Jim the Cab-Horse, They Finally Reached the Wonderful Land of Oz
You will also become acquainted with Jim the Cab-Horse, the Nine Tiny Piglets, and Eureka, the Kitten.
Old Anthony Rockwall, retired manufacturer and proprietor of Rockwall's Eureka Soap, looked out the library window of his Fifth Avenue mansion and grinned.
Name's Eureka. Great favorite at the royal palace," said the Shaggy Man, yawning.
"But here's a pointer that may be of service to you: make friends with Eureka and you'll be solid at the palace."
"It's easy, if you wear the Eureka Two-fifty Shoe."
The police scouted the theory of suicide, murder was dismissed as absurd, and the blame was thrown upon the Eureka Smokeless Cartridge Company.
In particular, Eureka Communities cited Iantha Gantt-Wright, NPCA's director of cultural diversity programs, for mentoring a Eureka fellow in early August.
Since March, Eureka has struck up partnerships with Robert Redford and his production house Wildwood Entertainment, with which it has several projects lined up.
Eureka is the kind of small, self-contained town where one man can be dubbed Mr.
LJMU's School of Sport and Exercise Sciences is working with the Eureka team to help co-create imaginative, stimulating content for the centre, around a theme of 'My Personal Best'.