fly ash

noun

: fine solid particles of ashes, dust, and soot carried out from burning fuel (such as coal or oil) by the draft

Examples of fly ash in a Sentence

Recent Examples on the Web Most of the ash used in Pines’ residential properties is called fly ash. Sarah Bowman, The Indianapolis Star, 30 May 2024 The use of fly ash as a feedstock eliminates the need to use limestone at all, let alone to superheat it. Erik Kobayashi-Solomon, Forbes, 13 Nov. 2023 As such, fly ash has long been mixed with OPC to increase the durability of concrete produced with it. Erik Kobayashi-Solomon, Forbes, 13 Nov. 2023 By themselves and without special treatment, pozzolans like fly ash possess almost no value as a cement component. Erik Kobayashi-Solomon, Forbes, 13 Nov. 2023 Industrial wastes like fly ash and blast furnace slag have replaced cement in concrete at times. Carolyn Barber, Fortune, 13 July 2023 The amount of fly ash increased eightfold in less than five years. Emily Wright, Washington Post, 16 June 2023 Removal of fly ash from silos will begin the week of July 24. Linda Gandee, cleveland, 17 July 2023 In about 1950, the Crawford core samples show a surge in radioactive plutonium from nuclear testing and sharp rises in heavy metals, fly ash from burning fossil fuels and evidence of acid rain and steadily rising temperatures. Peter Weber, The Week, 21 June 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'fly ash.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1931, in the meaning defined above

Time Traveler
The first known use of fly ash was in 1931

Dictionary Entries Near fly ash

Cite this Entry

“Fly ash.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fly%20ash. Accessed 23 Jun. 2024.

Kids Definition

fly ash

noun
: fine solid particles consisting of ashes, dust, and soot carried out from burning fuel (as coal or oil) by the draft

More from Merriam-Webster on fly ash

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