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retro- +‎ choir


retrochoir ‎(plural retrochoirs)

  1. (architecture) Any extension of a church behind the high altar, such as a chapel.
  2. (architecture) In an apsidal church, all the space beyond the line of the back or eastern face of the altar.

Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.