Definitions

1. noun

A device or machine that applies a thin layer of a substance, especially a coating or finish, to a surface.

“The factory uses a coater to apply a thin layer of paint to the car body.”

2. noun

A person whose job is to apply a coating or finish to a surface, especially with paint.

“The coater was responsible for applying the final coat of varnish to the furniture.”

3. verb

To apply a thin layer of a substance, especially a coating or finish, to a surface.

“The technician will coat the surface with a thin layer of ceramic material.”