or•ches•trateˈɔr kəˌstreɪt(v.t.)-trat•ed, -trat•ing.

1. to compose or arrange (music) for orchestra.

   Category: Music and Dance

2. to arrange, coordinate, or manipulate the elements of to achieve a goal or effect:

   to orchestrate negotiations.

   Category: Common Vocabulary

Origin of orchestrate:

1875–80; < F orchestr(er) (der. of orchestreorchestra ) + -ate1

or′ches•tra`tor(n.)

or′ches•trat`er(n.)