First Known Use: 1715
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noun \ˈaps\
: a part of a church that is shaped like a half circle and that is usually at the east end of the building
Full Definition of APSE
1
: apsis 1
2
: a projecting part of a building (as a church) that is usually semicircular in plan and vaulted
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Origin of APSE
Medieval Latin & Latin; Medieval Latin apsis, from Latin
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