What does archdeacon mean?
The definition of archdeacon
Arch`dea”con, n.
Etym: [AS. arcediacon, archidiacon, L. archidiaconus, fr. Gr. Arch-, pref., and Deacon.]

In England, an ecclesiastical dignitary, next in rank below a bishop, whom he assists, and by whom he is appointed, though with independent authority. Blackstone.