hemicycle

/ˈhɛmɪˌsaɪkəl/
noun
  1. A semicircular shape or structure, especially a curved seating arrangement in a legislative chamber or theater.
    • The architect designed the auditorium as a hemicycle to improve acoustics.
    • The parliament building has a large hemicycle where the representatives sit.
    • The hemicycle of the ancient Greek theater allowed everyone a good view of the stage.
Synonyms
What does "hemicycle" mean? | whatsthatwordmean | whatsthatwordmean