Dictionary

cytosine

noun cy·to·sine \ˈsī-tə-ˌsēn\

Definition of CYTOSINE

:  a pyrimidine base C4H5N3O that codes genetic information in the polynucleotide chain of DNA or RNA — compare adenine, guanine, thymine, uracil

Origin of CYTOSINE

International Scientific Vocabulary cyt- + -ose + 2-ine
First Known Use: 1894

cytosine

noun cy·to·sine \ˈsīt-ə-ˌsēn\   (Medical Dictionary)

Medical Definition of CYTOSINE

:  a pyrimidine base C4H5N3O that codes genetic information in the polynucleotide chain of DNA or RNA—compare adenine, guanine, thymine, uracil

Illustration of CYTOSINE

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