from The American Heritage® Dictionary of the English Language, 4th Edition
- interj. Used to express triumph upon finding or discovering something.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- interj. An exclamation indicating sudden discovery.
from the GNU version of the Collaborative International Dictionary of English
- The exclamation attributed to Archimedes, who is said to have cried out “Eureka! eureka!” (I have found it! I have found it!), upon suddenly discovering a method of finding out how much the gold of King Hiero's crown had been alloyed. Hence, an expression of triumph concerning a discovery.
from The Century Dictionary and Cyclopedia
- Literally, I have found (it): the reputed exclamation of Archimedes when, after long study, he discovered a method of detecting the amount of alloy in King Hiero's crown (see crown problem, under crown); hence, an exclamation of triumph at a discovery or supposed discovery.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an alloy of copper and nickel with high electrical resistance and a low temperature coefficient; used as resistance wire
- n. a town in northwest California on an arm of the Pacific Ocean
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 of heuriskein, to find.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek εὕρηκα (heurēka, "I have found"), perfect active indicative 1st singular of εὑρίσκω (heuriskō, "I find"). (Wiktionary)