proscenium
Pronunciation: /prə(ʊ)ˈsiːnɪəm/
Definition of proscenium
noun ( plural prosceniums or proscenia /-nɪə/)
- short for proscenium arch.
Origin:
early 17th century: via Latin from Greek proskēnion, from pro 'before' + skēnē 'stage'