From Longman Dictionary of Contemporary Englishprosceniumpro‧sce‧ni‧um /prəˈsiːniəm, prəʊ- $ prə-, proʊ-/ noun [countable] technical APTthe part of a theatre stage that is in front of the curtain the proscenium arch (=the arch over the stage where the curtain can be attached)
Examples from the Corpus
proscenium• We were having them simply marching across the proscenium curtain.• As soon as the infant Arthur was old enough to be propped against the proscenium arch, he was included in the turn.• Stella tiptoed from the proscenium arch, shielding her eyes from the glare of the footlights.• Joe Longthorne pops his head round the proscenium arch on the way to his dressing room.• The garlands that swathed the proscenium arch took the audience right on to the stage - in spirit.• This production flaunts a major advantage the National has over traditional West End theaters, with their proscenium stages.proscenium arch• A need to nod and wink to the audience; to fill in the gaps often elsewhere concealed by a proscenium arch.• As soon as the infant Arthur was old enough to be propped against the proscenium arch, he was included in the turn.• Stella tiptoed from the proscenium arch, shielding her eyes from the glare of the footlights.• Joe Longthorne pops his head round the proscenium arch on the way to his dressing room.• The garlands that swathed the proscenium arch took the audience right on to the stage - in spirit.Origin proscenium (1600-1700) Latin Greek proskenion, from skene “building in front of which plays are performed” 