Or·ches·tra·tion n. Mus. The arrangement of music for an orchestra; orchestral treatment of a composition; -- called also instrumentation.
n 1: an arrangement of a piece of music for performance by an
orchestra or band
2: the act of arranging a piece of music for an orchestra and
assigning parts to the different musical instruments [syn:
3: an arrangement of events that attempts to achieve a maximum
effect; "the skillful orchestration of his political