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Meaning of proscenium

pro•sce•ni•um

Pronunciation: (prō-sē'nē-um, pru-), [key]
— pl. -ni•a
  1. Also calledthe arch that separates a stage from the auditorium. Abbr.: pros.
  2. (formerly) the apron or, esp. in ancient theater, the stage itself.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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