Definition of DNA in US English:

DNA

noun

Biochemistry
  • 1Deoxyribonucleic acid, a self-replicating material which is present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.

    Each molecule of DNA consists of two strands coiled around each other to form a double helix, a structure like a spiral ladder. Each rung of the ladder consists of a pair of chemical groups called bases (of which there are four types), which combine in specific pairs so that the sequence on one strand of the double helix is complementary to that on the other. It is the specific sequence of bases that constitutes the genetic information

    • ‘In cultured cells, the consumption of the nutrients in the medium may affect the cell metabolism by interfering with deoxyribonucleic acid, ribonucleic acid and protein synthesis.’
    • ‘Each chromosome carries a single strand of deoxyribonucleic acid that threads together about 1,000 genes.’
    • ‘Along with several independent teams, her group is extracting DNA, or deoxyribonucleic acid, from the soil and working to clone the material.’
    • ‘Almost every cell in the body of an organism has the same deoxyribonucleic acid.’
    • ‘In general, deoxyribonucleic acid, or DNA, is a very stable molecule.’
    • ‘Increasingly, materials scientists are taking deoxyribonucleic acid beyond its origins as a carrier of genetic code and adapting it for use as a nanotechnology tool.’
    • ‘Many molecules, especially those in living things such as sugar, fat, or protein molecules and molecules of deoxyribonucleic acid or ribonucleic acid, are much larger and more complex.’
    • ‘DNA, or deoxyribonucleic acid, has an overall negative charge, so it might be used in a process called self-assembly to create electronic devices.’
    • ‘Within the nucleus are chromosomes that contain DNA, or deoxyribonucleic acid, genetic material unique to each individual.’
    • ‘The development of organisms, from human bodies to viruses, depends on genetic information contained in DNA, deoxyribonucleic acid.’
    1. 1.1 The fundamental and distinctive characteristics or qualities of someone or something, especially when regarded as unchangeable.
      ‘diversity is part of the company's DNA’
      ‘men just don't get shopping—it's not in our DNA’

Pronunciation

DNA

/ˌdē ˌen ˈā//ˌdi ˌɛn ˈeɪ/