IPA: /ɔːrˈkaɪtɪs/
KK: /ɔrˈkaɪtɪs/
A medical condition where one or both testicles become swollen and inflamed, usually due to an infection or injury.
The doctor diagnosed him with orchitis after he complained of severe pain in his groin.
Orchitis is formed from "orchis" (from Greek "orchis", meaning testicle) and "-itis" (from Greek "itis", meaning inflammation). The word refers to the inflammation of the testicles.
Think of 'orchis' which relates to testicles and '-itis' which indicates inflammation — this helps you remember that orchitis means inflammation of the testicles.