Webster's Revised Unabridged Dictionary · 1913

Decanal

Decanal (?; 277) , adjective

[Compare French décanal. See Dean.]

Pertaining to a dean or deanery.
His rectorial as well as decanal residence. — Churton
Collocations (2)
Decanal side , the side of the choir on which the dean's tall is placed.
Decanal stall , the stall allotted to the dean in the choir, on the right or south side of the chancel. — Shipley