RADIATOR /ˈɹeɪ.diˌeɪ.tɚ/ ► audio Scrabble 9 Words With Friends 9 Definition noun any object that radiates energy. noun heater consisting of a series of pipes for circulating steam or hot water to heat rooms or buildings. noun a mechanism consisting of a metal honeycomb through which hot fluids circulate. See all 85 words you can make from RADIATOR → 8-letter words Words starting with R Words ending with R ← Unscramble different letters