Definition of guanine in English:

guanine

noun

Biochemistry
  • A compound that occurs in guano and fish scales, and is one of the four constituent bases of nucleic acids. A purine derivative, it is paired with cytosine in double-stranded DNA.

    • ‘There are four DNA bases: adenine, cytosine, guanine, and thymine (A, C, G, and T).’
    • ‘The derivatives of purine are called adenine and guanine, and the derivatives of pyrimidine are called thymine, cytosine and uracil.’
    • ‘The film's name comes from the initials of the four DNA bases of our genetic code: guanine, adenine, cytosine and thymine.’
    • ‘The purines adenine and guanine are constituents of DNA.’
    • ‘The four become cytosine, guanine, adenine, and thymine, and the quantum forces that maintained the rest of universe sit on the sidelines while life take center stage.’

Origin

Mid 19th century: from guano + -ine.

Pronunciation:

guanine

/ˈɡwänēn//ˈɡwänən/