cytosine
noun
cy·to·sine
ˈsī-tə-ˌsēn 
Examples of cytosine in a Sentence
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The metaphor leaps out: Like letters of the alphabet, molecules (the nucleotide bases A, T, C and G, for adenine, thymine, cytosine and guanine) are arranged into sequences — words, paragraphs, chapters, perhaps — in every organism, from bacteria to humans.
—
Ingrid Wickelgren, Quanta Magazine, 5 Feb. 2025
The team also detected adenine, guanine, cytosine, thymine and uracil — all five of the biological nucleobases, or components that make up the genetic code in DNA and RNA.
—Ashley Strickland, CNN, 29 Jan. 2025
The other paper, in the journal Nature Astronomy, was even more tantalizing, reporting the discovery of all five nucleobases that make up DNA and RNA—adenine, guanine, cytosine, thymine, and uracil—in the Bennu samples.
—Jeffrey Kluger, TIME, 29 Jan. 2025
Each bead is one of four different nucleotides: adenine, thymine, cytosine, or guanine, which biologists refer to by the letters A, T, C, and G. Strings of these nucleotides encode the building instructions and control switches for proteins and other molecules that do the work of maintaining life.
—Michael C. Schatz, IEEE Spectrum, 27 June 2013
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Ingrid Wickelgren, Quanta Magazine, 5 Feb. 2025
The team also detected adenine, guanine, cytosine, thymine and uracil — all five of the biological nucleobases, or components that make up the genetic code in DNA and RNA.
—Ashley Strickland, CNN, 29 Jan. 2025
The other paper, in the journal Nature Astronomy, was even more tantalizing, reporting the discovery of all five nucleobases that make up DNA and RNA—adenine, guanine, cytosine, thymine, and uracil—in the Bennu samples.
—Jeffrey Kluger, TIME, 29 Jan. 2025
Each bead is one of four different nucleotides: adenine, thymine, cytosine, or guanine, which biologists refer to by the letters A, T, C, and G. Strings of these nucleotides encode the building instructions and control switches for proteins and other molecules that do the work of maintaining life.
—Michael C. Schatz, IEEE Spectrum, 27 June 2013
See All Example Sentences for cytosine
Cite this Entry
“Cytosine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cytosine. Accessed 28 Feb. 2025.
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cytosine
noun
cy·to·sine
ˈsīt-ə-ˌsēn
Medical Definition
cytosine
noun
cy·to·sine
ˈsīt-ə-ˌsēn
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