pentarchiecommon nounSyllable DecompositionpentarchieEtymologyexpandFrom Ancient Greek πενταρχία pentarkhía (pentarkhía), composed of and .Definitions1. Government of five leaders.expand2. Council of admiralty with five members, in Carthageantiquitéexpand3. Grouping consisting of Austria, France, Great Britain, Prussia, and Russia, from 1815 to 1860.expandPluralpentarchiesTranslationsitalian:pentarchia