or ‧ ches ‧ trate /ˈɔːkəstreɪt, ˈɔːkɪstreɪt $ ˈɔːr-/ BrE AmE verb [transitive]
1 . written to organize an important event or a complicated plan, especially secretly:
The riots were orchestrated by anti-government forces.
a carefully orchestrated promotional campaign
2 . to arrange a piece of music so that it can be played by an orchestra
—orchestration /ˌɔːkəˈstreɪʃ ə n, ˌɔːkɪˈstreɪʃ ə n $ ˌɔːr-/ noun [uncountable and countable]