A drama, either tragic or comic, of which music forms an essential part; a drama wholly or mostly sung, consisting of recitative, arials, choruses, duets, trios, etc., with orchestral accompaniment, preludes, and interludes, together with appropriate costumes, scenery, and action; a lyric drama.
- A theatrical presentation in which a dramatic performance is set to music.
- The score of such a work.
- A theater designed primarily for operas.
- A plural of opus.