cytosine
noun
cy·to·sine
ˈsī-tə-ˌsēn 
Examples of cytosine in a Sentence
Recent Examples on the Web
This four-tone greeting is not a specific communication per-se, but the nucleotides of guanine, uracil, adenine, and cytosine, which represent the building blocks of RNA.
—
Jeff Spry, Space.com, 14 Nov. 2025
Adenine always pairs with thymine, and guanine always pairs with cytosine.
—IEEE Spectrum, 2 Oct. 2025
Biology’s four bases—adenine (A), thymine (T), cytosine (C) and guanine (G)—encode the instructions that keep life alive.
—Andrew Whalen, Forbes.com, 9 July 2025
The most common way of doing this is to link a single carbon atom (a methyl group) to the base cytosine.
—ArsTechnica, 23 June 2025
See All Example Sentences for cytosine
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Jeff Spry, Space.com, 14 Nov. 2025
Adenine always pairs with thymine, and guanine always pairs with cytosine.
—IEEE Spectrum, 2 Oct. 2025
Biology’s four bases—adenine (A), thymine (T), cytosine (C) and guanine (G)—encode the instructions that keep life alive.
—Andrew Whalen, Forbes.com, 9 July 2025
The most common way of doing this is to link a single carbon atom (a methyl group) to the base cytosine.
—ArsTechnica, 23 June 2025
See All Example Sentences for cytosine
Cite this Entry
“Cytosine.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cytosine. Accessed 19 Nov. 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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