apsis

Definitions of apsis
  1. noun
    a domed or vaulted recess or projection on a building especially the east end of a church; usually contains the altar
    synonyms: apse
    see moresee less
    types:
    tribune
    the apse of a Christian church that contains the bishop's throne
    type of:
    niche, recess
    an enclosure that is set back or indented
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