IPA: /ɔːrˈkɛstrəl/
KK: /ɔrˈkɛstrəl/
Connected to a large group of musicians who play together, usually with string, brass, woodwind, and percussion instruments.
The orchestral music filled the concert hall with beautiful sounds.
Orchestral → It is formed from "orchestra" (from Greek "orkhestra", meaning a place for dancing) and the suffix "-al" (meaning pertaining to). The word "orchestral" refers to something that pertains to or is characteristic of an orchestra, which is a group of musicians playing together.
Think of the Greek word for a place where people dance ('orkhestra') — this helps you remember that 'orchestral' relates to the music played by a group of musicians.