flucytosine
noun
flu·cy·to·sine
| \ ˌflü-ˈsīt-ə-ˌsēn
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Medical Definition of flucytosine
: a white crystalline drug C4H4FN3O that can be synthesized from fluorouracil and is used to treat fungal infections especially by members of the genera Candida and Cryptococcus (especially Cryptococcus neoformans)