—n. 1. Music. a. a group of persons singing in unison.
b. (in an opera, oratorio, etc.) such a group singing choral parts in connection with soloists or individual singers.
c. a piece of music for singing in unison.
d. a part of a song that recurs at intervals, usually following each verse; refrain.
2. simultaneous utterance in singing, speaking, shouting, etc.
3. the sounds so uttered: a chorus of jeers. 4. (in a musical show)
a. a company of dancers and singers.
b. the singing, dancing, or songs performed by such a company.
5. (in ancient Greece)
a. a lyric poem, believed to have been in dithyrambic form, that was sung and danced to, originally as a religious rite, by a company of persons.
b. an ode or series of odes sung by a group of actors in ancient Greek drama.
c. the group of actors that performed the chorus and served as major participants in, commentators on, or as a supplement to the main action of the drama.
6. Theat. a. a group of actors or a single actor having a function similar to that of the Greek chorus, as in Elizabethan drama.
b. the part of a play performed by such a group or individual.
7. in chorus, in unison; with all speaking or singing simultaneously: They responded in chorus to the minister's questions.