The American Heritage® Dictionary of the English Language, 4th Edition
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.
n. The active medical suppression of the immune response.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. lowering the body's normal immune response to invasion by foreign substances; can be deliberate (as in lowering the immune response to prevent rejection of a transplanted organ) or incidental (as a side effect of radiotherapy or chemotherapy for cancer)
Word Usage
"But the biggest issues are going to be the long-term immunosuppression to keep the face from being rejected."