/yoo ree"keuh, yeuh-/ , interj.
1. ( cap. ) I have found (it): the reputed exclamation of Archimedes when, after long study, he discovered a method of detecting the amount of alloy mixed with the gold in the crown of the king of Syracuse.
2. (used as an exclamation of triumph at a discovery.)
[ 1560-70; heúreka, 1st person sing. perf. indic. of heurískein to find, discover ]