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

Next door to the kitchen is a family room with a glass NanaWall system that opens to a deck featuring retractable screens, a heater and an outdoor TV. — Lauryn Azu, Chicago Tribune, 9 July 2026

The disease does not generally spread from person to person but infections can occur if the bacteria get into a building's water supply, including in shower heads, sink faucets, hot water tanks, heaters, cooling towers and other plumbing systems. — Mary Kekatos, ABC News, 9 July 2026

In the first inning, Lane Thomas was ready for a first-pitch heater and belted a leadoff home run. — Kansas City Star, 9 July 2026

City Labs says its betavoltaic systems could also power heaters for microelectronics in harsh environments. — Stephen Clark, ArsTechnica, 8 July 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