Source : Webster's Revised Unabridged Dictionary (1913)

Eureka \Eu*re"ka\ [Gr. ? I have found, perfect indicative of ?
   to find.]
   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.

Source : WordNet®

Eureka
     n 1: a copper-nickel alloy with high electrical resistance and a
          low temperature coefficient; used as resistance wire
          [syn: {constantan}]
     2: a town in northwest California on an arm of the Pacific
        Ocean

Source : Free On-Line Dictionary of Computing

Eureka
     
        A European technological development programme.