In church architecture, a porticus (Latin for "portico")[a] is usually a small room in a church.
[2] Commonly, porticuses form extensions to the north and south sides of a church, giving the building a cruciform plan.
They may function as chapels, rudimentary transepts or burial-places.
For example, Anglo-Saxon kings of Kent were buried in the south porticus at St Augustine's Abbey in Canterbury, with the exception of Eadberht II, who was buried in a similar location in St Mary's Church, Reculver.
[3] This feature of church design originated in the late Roman period and continued to appear in those built on the European continent and, in Anglo-Saxon England, until the 8th century.