Eureka is Greek for 'I have found it', famously attributed to Archimedes leaping from his bath. From the same root as heuristic — both are about the act of finding.
An exclamation of triumph at a discovery; attributed to Archimedes upon discovering how to measure the volume of an irregular object.
From Greek heúrēka (εὕρηκα), the first person perfect tense of heurískein meaning 'to find'. The famous attribution to Archimedes comes from Vitruvius, writing two centuries after the event: Archimedes supposedly leapt from his bath and ran naked through Syracuse shouting 'heúrēka!' when he realised that water displacement could measure volume. Whether or not the story