Definition of pentadrachm in English:

pentadrachm

noun

rare
  • An ancient Cyrenaic coin worth five drachmas.

Origin

Early 19th century; earliest use found in John Robinson (1774–1840), historian. From Hellenistic Greek πεντάδραχμον piece of five drachmas, use as noun of neuter of ancient Greek πεντάδραχμος of the weight or price of five drachmas from πεντα- + δραχμή.

Pronunciation

pentadrachm

/ˈpɛntədram/