eureka JUST WRITTEN FOR YOU

/juˈɹikə/ · eu·re·ka
noun
  1. An alloy of copper and nickel whose electrical resistivity remains essentially constant over a wide temperature range. The laboratory switched to a eureka alloy for its precision temperature‑compensated resistors.
interjection
  1. An exclamation used to celebrate a sudden discovery or insight. Eureka! After hours of puzzling over the equation, she finally saw the solution.
Did you know? According to legend, Archimedes shouted "Eureka!" while running naked through the streets of Syracuse after realizing how to measure the king's crown.
Written by Lexi Wordsworth, Dictionary Editor 0 lookups Added Jul 14, 2026