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Word of the Day Tuesday, June 9, 2026

cytosine

/sɪˈtoʊsɪn/ noun · British & US
Valid in UKValid in US
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What does cytosine mean?

noun

A nucleotide base found in DNA and RNA, consisting of a heterocyclic aromatic ring with a nitrogen atom at the 3 and 1 positions.

Example

"The genetic code is written in a sequence of nucleotides, including cytosine, adenine, and guanine."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for cytosine

Rhymes with cytosine

Etymologically related