n. The power or dominion of a hierarch; hallowed or consecrated authority in what concerns religious order or government.n. Government by ecclesiastical rulers; an ecclesiastical or priestly form of government. —n. An order of holy beings regarded as employed in divine government.n. A body of persons organized in ranks and orders for the exercise of rule oversacred things; hence, an organized body of ecclesiastics intrusted with government of either church or state; also, a similarly organized body of officials in other systems of government: as, the Roman Catholic hierarchy.n. In science, a series of successive terms of different rank. The terms kingdom, order, suborder, family, genus, and species constitute a hierarchy in zoölogy.