Apse

Apse is the name given to the recess in a church. It is typically large, semicircular or polygonal, arched, having domed roof usually containing the altar. Such a recess is built typically at the eastern end of the church.

Apse is also a term in astronomy for apsis.

Nearby pages
Apsidal, Apsis, Apterous, Apterygota, Apterygote