Deoxyribonucleic acid (DNA) molecule into which another DNA fragment of appropriate size can be integrated without the loss of its capacity for self-replication.
Source:
PAC, 2018, 90, 1121. 'Terminology of bioanalytical methods (IUPAC Recommendations 2018)' on page 1143 (https://doi.org/10.1515/pac-2016-1120)