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eu·​re·​ka yu̇-ˈrē-kə How to pronounce eureka (audio)
used to express triumph on a discovery


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: marked by usually sudden triumphant discovery
a eureka moment


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Greek verb

eu·​re·​ka yu̇-ˈrē-kä How to pronounce eureka (audio)
: I have found (it)
motto of California

Examples of eureka in a Sentence

Recent Examples on the Web
Physicians describe not a eureka moment but a creeping realization, a longitudinal hunch. Jessica Winter, The New Yorker, 12 Aug. 2022 Standing in the living room of a tiny Tempe apartment is kind of a weird place to have a eureka moment. Bill Goodykoontz, The Arizona Republic, 24 Nov. 2021 In 2014, siblings Yasameen and Sheilla Sajady had a eureka moment at the family lunch table. Nicole Hvidsten, Star Tribune, 7 May 2021 The eureka moment for negotiators working to keep Sherwin-Williams’ headquarters in Cleveland came nearly two months ago, Mayor Frank Jackson disclosed this week. Robert Higgs, cleveland, 21 Feb. 2020 That eureka moment of mine with 5G in Providence came while using Verizon's network. Aaron Pressman, Fortune, 24 Jan. 2020 Joan Smalls’s decorating eureka moment came at a fashionable dinner party. Marc Karimzadeh, ELLE Decor, 8 Aug. 2019 That juxtaposition sparked Eheart’s eureka moment: build communities where foster families and older adults live together, helping each other. Abigail Jones, Newsweek, 24 Sep. 2014 Driving between his properties in Zambia back in 2010, Green Safaris’ founder Vincent Kouwenhoven’s eureka moment came when switching off his Land Rover to watch a pack of lions. Lee Middleton, Quartz Africa, 14 June 2019 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'eureka.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History



Greek heurēka I have found, from heuriskein to find; from the exclamation attributed to Archimedes on discovering a method for determining the purity of gold — more at heuristic

First Known Use


1603, in the meaning defined above


1948, in the meaning defined above

Time Traveler
The first known use of eureka was in 1603

Dictionary Entries Near eureka

Cite this Entry

“Eureka.” Dictionary, Merriam-Webster, Accessed 30 Nov. 2023.

Kids Definition


eu·​re·​ka yu̇-ˈrē-kə How to pronounce eureka (audio)
used to express the thrill of discovery


from Greek heurēka "I have found it"

Geographical Definition


geographical name

Eu·​re·​ka yu̇-ˈrē-kə How to pronounce Eureka (audio)
city and port on Humboldt Bay in northwestern California population 27,191

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