Home › Words › P › pythiadpythiadpythiad means the interval of time between the Pythian Games of Ancient Greece: either four or eight years, depending on the historical period.EtymologyFrom Ancient Greek Πυθίας (Puthías), from Πυθία (Puthía, “Pythia”).nounThe interval of time between the Pythian Games of Ancient Greece: either four or eight years, depending on the historical period.Definitions & examples from Wiktionary (CC BY-SA 3.0).