[ prə(ʊ)'si:nɪəm ]
■ noun ( plural ~s or proscenia -nɪə ) the part of a stage in front of the curtain.
↘(also ~ arch ) an arch framing the opening between the stage and the auditorium.
↘the stage of an ancient theatre.
Origin
C17: via L. from Gk proskēnion , from pro 'before' + skēnē 'stage'.