regionary en · ADJ
Etymology
Learned borrowing from New Latin regionarius, referring to a deacon in charge of one of the seven wards of Rome, from Latin regiō + -ārius. Equivalent to region + -ary. Doublet of regionarius.
Meanings
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(not-comparable) Of or pertaining to an ecclesiastical region.
Not surprisingly, the regionary magistrates do not appear very often in the historians: not every aedile turned out like Vespasian.
2013, Paul Erdkamp, The Cambridge Companion to Ancient Rome, page 175: