Definitor

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Hierarchy of the Catholic Church
Saint Peter
Ecclesiastical titles (order of precedence)
Pope Cardinal Cardinal Vicar Crown Prince Protector Moderator of the curia Chaplain of His Holiness Papal legate Papal majordomo Apostolic nuncio Apostolic delegate Apostolic Syndic Apostolic visitor Vicar apostolic Apostolic exarch Apostolic prefect Assistant to the papal throne Eparch Metropolitan Patriarch Catholicos Bishop Archbishop Bishop emeritus Diocesan bishop Major archbishop Primate Suffragan bishop Titular bishop Coadjutor bishop Auxiliary bishop Prelate Provost Pontiff Territorial prelate Territorial abbot
Liturgical titles Acolyte Consecrator Lector Subdeacon
Administrative and pastoral titles Auditor Brother Chancellor Chaplain Military chaplain Military ordinary Coarb Confessor Consultor Curate Deacon Archdeacon Defender of the bond Definitor Devil's advocate Diocesan administrator Ecclesiastical judge Exorcist Laity Lay abbot Abthain Commendatory Lay cardinal Minister Major orders Minor orders Missionary Monsignor Officialis Ostiarius Pastor Assistant pastor Palatinus Personal prelate Preacher Prefect Presbyter Elder Priest Principal Protonotary apostolic Reverend Saint Servant of God Blessed Venerable Seminarian Vicar Judicial vicar Vicar general Vicar forane Sub-dean
Consecrated and professed titles Abbess Abbot Consecrated virgin Corrector Custos Friar Dean Grand master Hermit Master of novices Monk Novice Nun Postulant Oblate Prior Provincial superior Rector Religious Superior general
Additional titles Almoner Altar server Archimandrite Archpriest Archdeacon Canon Captain General of the Church Chorbishop Coarb Commissary Apostolic Datarius Gonfalonier of the Church Honorary Prelate Minor canon Notarius Ostiarius Peritus Postulator Prebendary Precentor Prince-bishop Prince-abbot Prince-primate Prince-provost Promotor Fidei Protopriest Protodeacon Protosyncellus Regionarius Sacristan
Organization titles Grand master Knights Hospitaller Order of the Holy Sepulchre Teutonic Knights Inquisitor Grand Inquisitor Preceptor
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In the Catholic Church, a definitor (Latin for 'one who defines') is a title with different specific uses. There are secular definitors, who have a limited amount of oversight over a part of a diocese, and also definitors in religious orders who generally provide counsel and assistance to the superiors general and provincial superiors of their order.