thyminePronunciation: /ˈθʌɪmiːn/Definition of thymine 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 + -ine4thymine in other Oxford dictionaries Definition of thymine in the US English dictionary
