IPA: /ˌɪmjunəˈdʒɛnɪk/
KK: /ɪˌmjunəˈdʒɛnɪk/
Able to cause the body to produce an immune response, often related to substances that can trigger the immune system.
The vaccine is designed to be highly immunogenic, ensuring a strong immune response.
Immunogenic → It is formed from "immunis" (from Latin, meaning exempt or free from) and "genic" (from Greek "genes", meaning born of or produced by). The word "immunogenic" refers to something that produces an immune response.
Think of something that is 'produced by' ('genic') that makes you 'exempt' ('immunis') from disease — that's why immunogenic means it triggers an immune response.