Guide to commonly used terms during the 4 sessions of the Second Vatican Council (Concilium Oecumenicum Vaticanum Secundum) from 1962-1965.

Aggiornamento: a bringing up to date of the rites and texts in light of present conditions

Apostolicam Actuositatem: Decree on the Apostolate of the Laity

De Ecclesia: the Dogmatic Constitution "on the Church" a.k.a Lumen Genitum.(promulgated 1964)

Dignitatus Humanae Personae: Declaration of Religious Freedom

Ecclesiastical: of, or relating to a church (Merriam Webster)

Ecumenism: interchurch relations

Ecumenicity: the quality of state of being drwan closer to others thorugh ecumenism (Merriam Webster def.)

Encyclical: Papal communication, typically a letter, to bishops and church hierarchy

Episcopal: that which relates to bishop

Episcopate: the rank or office of (a) bishop(s). (Merriam-Webster def.)

Gaudium et Spes: Pastoral Constitution on the Church in the Modern World

Modi: desired changes in a text being considered by the Council

Nostra Aetate: Declaration on the Relations of the Church to Non-Christian Religions

Periti:  Official experts appointed to the Second Vatican Council. (sing. peritus)

Presbyterium: college of priests surrounding a bishop (Rynne)

Relatio: a report

Rinnovamento: renewal (e.g. spiritual)

Roman Curia: central governing body of the Catholic Church (Wikipedia)

Sacrosanctum Concilium: the Constitution on the Sacred Liturgy

Schema: a structured framework or plan (Merriam Webster def.)

Unitatais Reintegratio: The Decree on Ecumenism (promulgated 1964)


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