: a substance that carries genetic information in the cells of plants and animals
—often used before another noun
DNA analysis
DNA testing
a DNA fingerprint [=a sample of a person's DNA that can be used to identify someone, such as a criminal]
DNA fingerprinting
Note: DNA is an abbreviation of "deoxyribonucleic acid."
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“DNA.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/DNA. Accessed 24 Jun. 2026.
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