proscenium Meaning, Definition & Usage

  1. noun the part of a modern theater stage between the curtain and the orchestra (i.e., in front of the curtain)
    apron; forestage.
  2. noun the wall that separates the stage from the auditorium in a modern theater
    proscenium wall.

WordNet

Pro*sce"ni*um noun
Etymology
L., fr. Gr. before + a tent, a wooden stage, the stage. See Scene.
Wordforms
plural Proscenia
Definitions
  1. (Anc. Theater) The part where the actors performed; the stage.
  2. (Modern Theater) The part of the stage in front of the curtain; sometimes, the curtain and its framework.

Webster 1913