mitomycin
noun
mi·to·my·cin ˌmī-tə-ˈmī-sᵊn 
: a complex of antibiotic substances that is produced by a Japanese streptomyces (Streptomyces caespitosus)
especially : one form C15H18N4O5 that inhibits DNA synthesis and is used as an antineoplastic agent
Example Sentences
Recent Examples on the Web A shortage of the bladder-cancer drug BCG in 2014 and 2015 led to sharp price increases for a less effective alternative treatment, mitomycin, according to research published online Wednesday by the New England Journal of Medicine. 
Peter Loftus, WSJ, 12 Apr. 2017
Peter Loftus, WSJ, 12 Apr. 2017 Word History
Etymology
probably from mito- (taken as a combining form of mitosis) + -mycin
First Known Use
1956, in the meaning defined above
Medical Definition
mitomycin
noun
mi·to·my·cin ˌmīt-ə-ˈmīs-ᵊn
1
: a complex of antibiotic substances which is produced by a Japanese bacterium of the genus Streptomyces (S. caespitosus)
2
: a component C15H18N4O5 of mitomycin that inhibits DNA synthesis and is used as an antineoplastic in the palliative treatment of some carcinomas
called also mitomycin C
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