|(used as a nonsense word by children to express approval or to represent the longest word in English.)|
|a white, crystalline, water-insoluble solid, C14H9Cl5, usually derived from chloral by reaction with chlorobenzene in the presence of fuming sulfuric acid: used as an insecticide and as a scabicide and pediculicide: agricultural use prohibited in the U.S.|
immunosuppression im·mu·no·sup·pres·sion (ĭm'yə-nō-sə-prěsh'ən, ĭ-my&oomacr;'-)
Suppression of the immune response, as by drugs or radiation, in order to prevent the rejection of grafts or transplants or control autoimmune diseases. Also called immunodepression.