IPA: //pəˈrɒksi//
KK: /pəˈrɒksi/
A chemical group consisting of two oxygen atoms bonded together, often found in compounds called peroxides.
The chemist explained the properties of the peroxy group in the new compound.
Peroxy is formed from "per-" (meaning through or thoroughly) and "oxy" (from Greek "oxys", meaning sharp or acid). The term refers to a compound containing two oxygen atoms, indicating a thorough or complete presence of oxygen.
Think of 'per-' meaning thoroughly and 'oxy' relating to oxygen — this helps you remember that 'peroxy' refers to a compound with a complete presence of oxygen.