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

An additional lawsuit was filed in January in federal court in Kansas City, Kansas, against LivaNova and an employee at The University of Kansas Hospital, called a perfusionist, who was in charge of the heater-cooler device during the surgery of a patient who later died. —Judy L. Thomas, Kansas City Star, 14 Apr. 2026

For all the talk about Mason Miller’s historic heater, the Padres’ bullpen so far has been susceptible to the kind of volatility that can bite the relief corps. —Jeff Sanders, San Diego Union-Tribune, 13 Apr. 2026

On the decked out patio, a BBQ grill station, lots of outdoor seating, and an attractive outdoor heater invite you to spend just as much down time enjoying your outdoor surroundings. —Bailey Berg, Architectural Digest, 8 Apr. 2026

Rotating the Orion capsule to expose the line to the Sun and using vent heaters to melt away the ice once again made the commode usable. —Victor Tangermann, Futurism, 8 Apr. 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