IPA: /ˌɔːrkɪˈstreɪʃənl/
KK: /ɔrˈkɛstrəˌʃənl/
Relating to the arrangement and organization of music for an orchestra.
The orchestrational elements of the symphony were carefully crafted to enhance the overall performance.
Orchestrational → It is formed from "orchestra" (from Greek "orkhestra", meaning a place for dancing) and "-ational" (meaning relating to or characterized by). The word "orchestrational" refers to something that is related to or characterized by the arrangement and coordination of music or performance, akin to how an orchestra is organized.
Think of an 'orchestra' as a place where music is arranged and performed, and the '-ational' suffix indicates that it relates to this arrangement.