immunosuppression Syllabification: (im·mu·no·sup·pres·sion)Pronunciation: /ˌimyənōsəˈpreSHən, iˌmyo͞o-/Definition of immunosuppression noun Medicine the partial or complete suppression of the immune response of an individual. It is induced to help the survival of an organ after a transplant operation. Derivatives immunosuppressantPronunciation: /-səˈpresənt/ noun immunosuppressedPronunciation: /-səˈprest/ adjective immunosuppression in other Oxford dictionaries Definition of immunosuppression in the British & World English dictionary