an•ti•pro•lif•er•a•tivePronunciation: (an"tē-prō-lif'u-rā"tiv, an"tī-), [key] Pharm.
of or pertaining to a substance used to prevent or retard the spread of cells, esp. malignant cells, into surrounding tissues.
any such substance.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.