thymine

 
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

Origin:

late 19th century: from thymus + -ine4