ex·e·dra /ˈɛksədrə/
  Ex·e·dra n.; pl. Exedræ
  1. Class. Antiq. A room in a public building, furnished with seats.
  2. Arch. (a) The projection of any part of a building in a rounded form. (b) Any out-of-door seat in stone, large enough for several persons; esp., one of curved form.
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