def·​i·​ni·​tor | \ ˈdefəˌnītə(r)\
plural -s

Definition of definitor

1 : an official charged under canon law with the supervision of ecclesiastical property in one of the districts into which a deanery is divided and with aiding the dean
2a : a member of the general chapter in some religious orders
b : a member of the governing council of some religious orders chosen to aid the superior in the government of the order

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History and Etymology for definitor

Medieval Latin, from Late Latin, teacher, from Latin definitus (past participle of definire to determine, bring to an end, explain) + -or

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