primer

https://doi.org/10.1351/goldbook.09716

Short pre-existing polynucleotide chain attached to a complementary stretch in template deoxyribonucleic acid (DNA) to which new deoxyribonucleotides can be added by DNA polymerase.

Source:
PAC, 2018, 90, 1121. (Terminology of bioanalytical methods (IUPAC Recommendations 2018)) on page 1150 [Terms] [Paper]