IPA: /pərˈkʌʃən/
KK: /pərˈkʌʃən/
A type of musical instrument that produces sound when struck, or the group of such instruments in a band or orchestra.
The drummer played a variety of percussion instruments during the concert.
Percussion is formed from "per-" (meaning through) and "cussus" (from "quassare", meaning to shake or strike). The word describes the act of striking through an object to produce sound, particularly in music.
Think of striking something 'through' ('per-') to create sound, which is what percussion instruments do.