Definition of fluidized bed
: a bed of small solid particles (as in a coal burning furnace) suspended and kept in motion by an upward flow of a fluid (such as a gas)
— called also fluid bed
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“Fluidized bed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fluidized%20bed. Accessed 6 Mar. 2021.
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The first known use of fluidized bed was in 1949
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