Definition

A device used to produce warmth or heat in a space, often used in homes or buildings during cold weather.

Example

We turned on the heater to warm up the living room.

Conversation

Is it just me, or is it getting really cold in here?

Yeah, I think we should turn on the heater.

Good idea! I hope it warms up soon.

Same here; I can't stand this chilly weather!

Synonyms & Antonyms

Root Explanation

Heater → The word is formed from "heat" (from Old English *hætu*, meaning warmth or hotness) and the suffix "-er" (meaning a person or thing that performs a specified action). A heater is a device that produces heat or warmth.

Memory Tip

Think of something that produces 'warmth' ('heat') — the '-er' indicates it is a device that does this. A heater is a thing that gives off heat.

Visually Confused Words