mitomycin
/ˌmʌɪtə(ʊ)ˈmʌɪsɪn/(also mytomycin) Pharmacology
noun
Any of a group of closely related antibiotics produced by the soil bacterium Streptomyces caespitosus; specifically (in full mitomycin C) the principal member of this group, which inhibits DNA synthesis by cross-linking the two chains of duplex DNA molecules and is used medically as an antineoplastic agent.
Origin
1950s. Probably from mito- + -mycin.