Eureka Definition

yo͝o-rēkə
interjection
Used to express triumph upon finding or discovering something.
American Heritage
I have found (it): believed to have been uttered by Archimedes when he discovered a way to determine the purity of gold by applying the principle of specific gravity.
Webster's New World
I've got it; yes; that's it.
Webster's New World
An exclamation indicating sudden discovery.
Wiktionary
pronoun

A city in northern California.

Wiktionary

A city in Illinois.

Wiktionary

A city in Kansas.

Wiktionary

A city in Missouri.

Wiktionary

A town in Montana.

Wiktionary

Origin of Eureka

  • 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

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Ancient Greek εὕρηκα (heurēka, “I have found”), perfect active indicative 1st singular of εὑρίσκω (heuriskō, “I find”).

    From Wiktionary

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