metropolitanate

From metropolitan +‎ -ate (forms nouns denoting rank or office).

metropolitanate (plural metropolitanates)

1. The see of a metropolitan bishop.
   • 1855, Henry Hart Milman, History of Latin Christianity‎^[1]:

     that ascending ladder of ecclesiastical honours , the priorate , the abbacy , the bishopric , the metropolitanate , the cardinalate , and even that which was beyond and above all .

• “metropolitanate”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.