noun

heater

heater, radiator

I turned on the space heater.

I turned on the space heater.

Our water heater is broken.

Our water heater is broken.

((a/the ~)) a device for heating something I turned on the space heater.

Synonyms: furnace, radiator, stove

From the verb 'heat' plus the agent suffix '-er', meaning 'a thing that heats'.

A 'heater' is a device that makes things 'heat' up. The '-er' ending often means 'a thing that does something'.

This page is designed for learning support. Please use it as a learning reference, not as a formal reference.