heater B1 Topic:Tools, Machines & Construction US /ˈhitɚ/ UK /ˈhiːtə/ See IPA manual Freq #11559 Meanings 1 noun A machine that produces heat to warm a room, building, or water. Turn on the heater; I'm cold. 2 noun (baseball) A very fast pitch. The pitcher threw a heater right past the batter. Thesaurus Synonyms 1 noun · a machine that produces... warmer 2 noun · (baseball) a very fast pitch. fastball Word family Forms heaters Derived forms heaterlessmicroheater Related forms heating Appears in Phrases (1) See all kerosene heater a heating device that burns kerosene as fuel Noun + noun Etymology AI details From heat + -er. Topics Tools, Machines & Construction External links Google Images Cambridge Dictionary Wiktionary # heater **Type:** Word **Level:** B1 **Part of speech:** noun **IPA (US):** /ˈhitɚ/ **IPA (UK):** /ˈhiːtə/ **Frequency rank:** 11559 ## Meanings 1. A machine that produces heat to warm a room, building, or water. 2. (baseball) A very fast pitch. ## Examples - Turn on the heater; I'm cold. - The pitcher threw a heater right past the batter. ## Derived Forms - heaterless - microheater ## Related Forms - heating ## Etymology From heat + -er. ## AI Etymology Heater comes from heat + -er. The analysis is mainly morphological: the modern nominal form is built from the named base and affix. In current use, the main senses are “A machine that produces heat to warm a room, building, or water” and “(baseball) A very fast pitch”. ## Topics - Tools, Machines & Construction markdown