primer

Definitions

A substance used as a preparatory coat on a surface before the application of paint.

An elementary textbook that serves as an introduction to a subject.

A device, such as a cap or tube, used to ignite an explosive charge.

Examples

Before painting the wooden cabinet, you should apply a coat of primer to ensure the color adheres properly.

The professor handed out a short primer to help the students understand the basic concepts of quantum physics.