heater

noun

heat·​er ˈhē-tər 

1

: one that heats

especially : a device that imparts heat or holds something to be heated

2

: fastball

Examples of heater in a Sentence

Recent Examples on the Web

If pressure, temperature, flow or level moves away from its set point, the controller adjusts a valve, heater, pump or another manipulated variable. — Gregory Shahnovsky, Forbes.com, 10 Sep. 2026

Bliss Mobil's standard 13-foot units include diesel heating, but since this one has been designed to run on 100% electricity without any fossil fuel usage, that heater has been axed from the spec list. — New Atlas, 10 Sep. 2026

By the way, De La Cruz homered again, and has been on a heater lately, hitting four-baggers in four straight games. — Jayson Stark, New York Times, 9 Sep. 2026

Despite heaters and nutrient sprays, Delta County farmers lost everything. — Jamie Siebrase, Denver Post, 8 Sep. 2026

Word History

First Known Use

15th century, in the meaning defined at sense 1

Phrases Containing heater

• immersion heater
• quartz heater
• space heater
• water heater

Rhymes for heater

• beater
• cheater
• dieter
• eater
• liter
• litre
• meter
• metre
• neater
• praetor
• seater
• skeeter

Kids Definition

heater

noun

heat·​er ˈhēt-ər 

: a device that heats or holds something to be heated