A religious (using the word as a noun) is, in the terminology of the Catholic Church, a member of a religious institute, someone who belongs to "a society in which members...pronounce public vows...and lead a life of brothers or sisters in common".
Some classes of religious have also been referred to, though less commonly now than in the past, as regulars, because of living in accordance with a religious rule (regula in Latin) such as the Rule of Saint Benedict.
Catholic canon law definition
Religious are members of religious institutes, societies in which the members take public vows and live a fraternal life in common. Thus monks such as Benedictines and Carthusians, nuns such as Carmelites and Poor Clares, and friars such as Dominicans and Franciscans are called religious.
Those living other recognized forms of consecrated life are not classified as religious. A member of a secular institute is thus not a religious. Nor is a consecrated hermit, a consecrated virgin, or a person who follows some other form whose approval is reserved to the Holy See.
Clerical or lay
If a religious has been ordained as a deacon, a priest or a bishop, he also belongs to the clergy and so is a member of what is called the "religious clergy" or the "regular clergy". Clergy who are not members of a religious institute are known as secular clergy. They generally serve a geographically defined diocese or a diocese-like jurisdiction such as an apostolic vicariate or personal ordinariate, and so are also referred to as diocesan clergy.
While the state of consecrated life is neither clerical or lay, institutes themselves are classified as one or the other. A clerical institute is one that "by reason of the purpose or design intended by the founder or by virtue of legitimate tradition, is under the direction of clerics, assumes the exercise of sacred orders, and is recognized as such by the authority of the Church". In clerical institutes, such as the Dominican Order or the Jesuits, most of the members are clerics. In only a few cases do lay institutes have some clergy among their members.
The Code of Canon Law devotes to religious 103 canons arranged in eight chapters:
- Religious houses and their erection and suppression
- The governance of institutes
- The admission of candidates and the formation of members
- The obligations and rights of institutes and their members
- The apostolate of institutes
- Separation of members from the institute
- Religious raised to the episcopate
- Conferences of major superiors
- Consecrated life
- Institute of consecrated life
- Religious institute
- Religious congregations
- Secular institute
- Society of apostolic life
- Code of Canon Law, canon 607 §2. The full text is: "a society in which members, according to proper law, pronounce public vows, either perpetual or temporary which are to be renewed, however, when the period of time has elapsed, and lead a life of brothers or sisters in common".
- Code of Canon Law, canon 607
- Code of Canon Law, canon 710
- Code of Canon Law, canon 603
- Code of Canon Law, canon 604
- Code of Canon Law, canon 605
- Cf. Code of Canon Law, canon 207
- Code of Canon Law, canon 588
- Code of Canon Law, canons 607 to 709