Definition of thymine in English:

thymine

Line breaks: thy|mine
Pronunciation: /ˈθʌɪmiːn
 
/

noun

[mass noun] Biochemistry
  • A compound which is one of the four constituent bases of nucleic acids. A pyrimidine derivative, it is paired with adenine in double-stranded DNA.
    • Alternative name; 5-methyluracil; chemical formula: C5H6N2O2
    More example sentences
    • The derivatives of purine are called adenine and guanine, and the derivatives of pyrimidine are called thymine, cytosine and uracil.
    • Of the four bases that make up DNA - adenine, thymine, cytosine and guanine - only cytosine has the potential to be methylated in humans and most mammals.
    • In DNA the bases pair to form a ladder-like structure, with adenine paired with thymine and guanine with cytosine.

Origin

late 19th century: from thymus + -ine4.

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