I read a programming primer and learned the basics.
A preparatory coating applied before painting to improve adhesion and durability.
Please apply primer before painting the wall.
primer; makeup base
A cosmetic product applied before foundation to smooth the skin and help makeup last longer.
Using a primer as a makeup base helps foundation go on better.
primer; oligonucleotide primer
In molecular biology, a short nucleic acid sequence that serves as a starting point for DNA synthesis.
In PCR, primers are needed to amplify a specific DNA region.