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definitions

immunosuppressant

[ĭm′yə-nō-sə-prĕs′ənt, ĭ-myōō′-]
n.
  1. An agent that suppresses the body's immune response.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.