Nucleotide sequence that can form a double-stranded structure with another deoxyribonucleic acid (DNA) sequence by following base-pairing (see base pair) rules.
Source: PAC, 2018, 90, 1121. 'Terminology of bioanalytical methods (IUPAC Recommendations 2018)' on page 1144 (https://doi.org/10.1515/pac-2016-1120)