im·mu·no·sup·pres·sion 
(ĭm′yə-nō-sə-prĕshən, ĭ-my′-)
(ĭm′yə-nō-sə-prĕshən, ĭ-my′-)n.
Suppression of the immune response, as by drugs or radiation, in order to prevent the rejection of grafts or transplants or to control autoimmune diseases. Also called immunodepression.
im′mu·no·sup·pressant (-prĕsənt) n.
im′mu·no·sup·pressed (-prĕst) adj.
im′mu·no·sup·pressive adj.