1. basic textbooks that introduce elementary principles of a subject
2. preparatory coats of paint applied to surfaces before the main paint
3. small explosive charges used to ignite larger charges in ammunition
Usage: military; technical

Examples

• The students used reading primers to learn basic vocabulary.
• She bought several primers on computer programming for beginners.
• Apply two coats of primer before painting the walls.
• The metal primers help prevent rust on outdoor surfaces.
• The ammunition factory produces primers for various caliber bullets.
• Without proper primers, the paint won’t adhere to the surface.
• These primers are designed for children just learning to read.