DNaseˈ noun

Deoxyribonuclease, an enzyme that promotes the hydrolysis of DNA into smaller molecules

DNA library noun (biology)

A mixture of cloned DNA sequences derived from a single source and containing all or most of the sequences from that source

DNA profiling or DNA fingerprinting noun

Genetic fingerprinting (see under genetic)

DNA virus noun

A virus in which genetic information is contained in DNA rather than RNA