sphex I. \ˈsfeks\noun Etymology: New Latin, from Greek sphēk-, sphēx wasp 1.capitalized: a genus of wasps that is the type of the family Sphecidae 2.pluralsphe·ges\ˈsfē(ˌ)jēz\alsosphexes: any wasp of the genus Sphex II. Etymology: New Latin synonym of chlorion