- a semicircular or polygonal projection of a building, esp. one at the east end of a church, with a domed or vaulted roof
- apsis (sense )
L apsis, apsis
See apse in American Heritage Dictionary 4
- Architecture A usually semicircular or polygonal, often vaulted recess, especially the termination of the sanctuary end of a church.
- Astronomy An apsis.
Origin: Variant of apsis
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