1.Initialism of deoxyribonucleic acid (“a nucleic acid found in all living things (and some non-living things such as certain viruses) which consists of two polynucleotide chains that coil around each other to form a double helix; encoded in its structure are genetic instructions for development, functioning, growth, and reproduction”).
2.The part of a living thing that carries genetic information.
3.The fundamental nature or values of a person, or an organization or other thing, especially when considered as innate or immutable.