antitumor antibioticListen to pronunciation(AN-tee-TOO-mer AN-tee-by-AH-tik)A type of anticancer drug that blocks cell growth by interfering with DNA, the genetic material in cells. Also called anticancer antibiotic and antineoplastic antibiotic.Search NCI's Dictionary of Cancer TermsStarts withContainsBrowse:ABCDEFGHIJKLMNOPQRSTUVWXYZ#