Definitions of hierarchy
n. - Dominion or authority in sacred things. 2
n. - A body of officials disposed organically in ranks and orders each subordinate to the one above it; a body of ecclesiastical rulers. 2
n. - A form of government administered in the church by patriarchs, metropolitans, archbishops, bishops, and, in an inferior degree, by priests. 2
n. - A rank or order of holy beings. 2
The word "hierarchy" uses 9 letters: A C E H H I R R Y.