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immersion heater

noun

  1. a small electric coil used to heat a liquid, as a cup of water, in which it is immersed.


immersion heater

noun

  1. an electrical device, usually thermostatically controlled, for heating the liquid in which it is immersed, esp as a fixture in a domestic hot-water tank
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of immersion heater1

First recorded in 1910–15

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immersion footimmersionism