A side-altar or bye-altar is an

altar An altar is a table or platform for the presentation of religion, religious offerings, for sacrifices, or for other ritualistic purposes. Altars are found at shrines, temples, Church (building), churches, and other places of worship. They are use ...

that is subordinate to the central or high altar in a church. The term is generally applied to altars situated in bays of the

nave The nave () is the central part of a church, stretching from the (normally western) main entrance or rear wall, to the transepts, or in a church without transepts, to the chancel. When a church contains side aisles, as in a basilica-type ...

transept A transept (with two semitransepts) is a transverse part of any building, which lies across the main body of the building. In cruciform ("cross-shaped") cruciform plan, churches, in particular within the Romanesque architecture, Romanesque a ...

s, etc. Side-altars may be recessed in a side-chapel, or simply built against a main

aisle An aisle is a linear space for walking with rows of non-walking spaces on both sides. Aisles with seating on both sides can be seen in airplanes, in buildings such as churches, cathedrals, synagogues, meeting halls, parliaments, courtrooms, ...

wall. Before the liturgical reforms arising from the

Second Vatican Council The Second Ecumenical Council of the Vatican, commonly known as the or , was the 21st and most recent ecumenical council of the Catholic Church. The council met each autumn from 1962 to 1965 in St. Peter's Basilica in Vatican City for session ...

, separate Masses may be celebrated simultaneously by other priests at side-altars, even as there is an ongoing Mass at the high altar.

References

See also