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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
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
Tiny black bits of fly ash — a byproduct of burning coal and oil — drifted into the lake from rapidly industrializing cities.
—Emily Wright, Washington Post, 16 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
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 10 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
Britannica.com: Encyclopedia article about fly ash
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