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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 periodicals archive ?
Eureka! Mersey - a sister attraction to the hugely popular Eureka!
PLANS for a second Eureka! children's museum which is set to cost around PS11m have been submitted to Wirral Council.
Eureka has an interesting history; the name is supposedly from when a sailor returned to Two Mills looking for his long-lost love, and on finding her shouted "Eureka!" Hundreds of cafes around the UK were nominated across five categories online, with a shortlist for each then poured over by a panel of experts.
IT'S hard to believe but Eureka! is 25 years old this year.
These stories and dozens like them can be found in a 2010 book by Marlene Wagman-Geller titled Eureka! The Surprising Stories Behind the Ideas that Shaped the World.
Beth Dennis, in Year 5 at Levendale Primary School, won the prize after she entered the national competition to design a space rocket, run by the Eureka! Children's Museum in Halifax.
He then ran through the streets of Syracuse, Sicily, naked, shouting "Eureka, Eureka!"
Functionality: CallMiner Eureka! automatically analyzes 100 percent of every single customer interaction in the contact center, identifies pertinent information from those calls, and organizes the results.
NEW YORK -- The Nielsen Company said yesterday that BASES, its forecasting and consulting service for new products, and Newtown, Ohio-based Eureka! Ranch Technology, Ltd., a consulting firm specializing in new product innovation, would join forces to offer clients an integrated approach to identifying, developing, and optimizing new products.
PLANS for Eureka! The National Children's Museum to open an attraction on Wirral's waterfront have moved a step closer after it secured PS3m of funding.
THE National Children's Museum in Halifax, Eureka!, is celebrating record-breaking visitor numbers.