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plan of the 4th-century ad
St. Peter's Basilica, Rome, Italy
1. Architecture A usually semicircular or polygonal, often vaulted recess, especially the termination of the sanctuary end of a church.
2. Astronomy An apsis.
[Variant of apsis.]
1. (Architecture) Also called: apsis a domed or vaulted semicircular or polygonal recess, esp at the east end of a church
2. (Astronomy) astronomy another name for apsis1
[C19: from Latin apsis, from Greek: a fitting together, arch, from haptein to fasten]
1. a usu. vaulted semicircular or polygonal termination or recess in a building, esp. at the end of a church.
[1815–25; variant of apsis]
apse- From Latin apsis, meaning "fastening together," it is based on the notion that a vaulted space seems to be the joining together of arcs to form a circle.
See also related terms for joining.
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|Noun||1.||apse - a domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar|
tribune - the apse of a Christian church that contains the bishop's throne