IPA: /ˌɪm.jʊ.nəˈlɒdʒ.ɪst/
KK: /ɪˌmjunəˈlɑdʒɪst/
A person who studies or works in the field of medicine that focuses on the immune system and its functions.
The immunologist conducted research to develop new vaccines.
Immunologist → It is formed from "immunis" (from Latin, meaning exempt or free from) and "logia" (from Greek, meaning study or science). An immunologist is a specialist who studies the immune system and its functions, particularly how the body defends itself against diseases.
Think of someone who studies being 'exempt' from diseases ('immunis') and the 'science' of that study ('logia'). This helps you remember that an immunologist focuses on the immune system.