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

For much of the U.S. population, filling up with gas, switching on the heater and turning on the stove are everyday behaviors that feel as normal as breathing. —Whitaker Irvin Jr., Forbes.com, 15 Apr. 2025

The first-in-nation rule addresses emissions from midstream oil and gas operations, such as facilities that gather, compress and process natural gas, as well as engines, turbines and heaters. —Sharon Udasin, The Hill, 14 Apr. 2025

Best Outdoor Fire Pit and Patio Heater Deals Warmer weather is ahead, but outdoor fire pits and patio heaters are must-haves during the summer, too. —Stephanie Osmanski, Better Homes & Gardens, 8 Apr. 2025

On 83 pitches, Marquez walked none and struck out four, including a 98 mph heater up and in to strike out J.T. Realmuto to finish off the sixth. —Kyle Newman, Denver Post, 31 Mar. 2025

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