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

Its sauna area fits up to four adults and has an electric sauna heater, while its plunge pool fits up to six adults. — New Atlas, 11 Oct. 2026

Two dead roaches were found, one under a hot water heater, the other under a shelf with tortilla chips. — David J. Neal, Miami Herald, 2 Oct. 2026

Quarterback Malik Willis will present some challenges, but the Dolphins face a tall task with Minnesota’s defense on a heater. — Jon Krawczynski, New York Times, 2 Oct. 2026

In a sauna, dismantling a cabin because a control or heater needs replacement would be a poor outcome. — Christopher Kiggins, Forbes.com, 29 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