fly ash

noun

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

Example Sentences

Recent Examples on the Web The idea that transportation ruled out full removal of the coal ash in both ponds was questioned by multiple community members who pointed out that fly ash, a similar type of coal combustion residual, is already regularly shipped from the facility. Sylvia Goodman, chicagotribune.com, 16 Dec. 2021 There are several types of coal ash, including fly ash, which is fine and powdery, bottom ash which is heavy and coarse, and boiler slag, which is melted bottom ash. Isabelle Chapman, CNN, 7 Dec. 2021 Until recently, the industry was finding economies in recycling fly ash and slag — waste products from coal plants, which are now growing scarce, and steel plants, which are concentrated in China. Justin Davidson, Curbed, 4 Dec. 2021 The dust from the mine and the coal fly ash from the thermal power plant blanketed everything. Ishan Kukreti, Quartz, 5 Nov. 2021 At concrete batch plants, respirable crystalline silica can come from cement and fly ash, a powder used in producing cement. Elena Bruess, San Antonio Express-News, 17 Sep. 2021 Additionally, the fly ash produced by Stronghold is classified as fertilizer and has been awarded an agriculture liming materials license by the Commonwealth of Pennsylvania’s Department of Agriculture. Billy Bambrough, Forbes, 22 June 2021 As for the reservoir, Compton said there have been discussions of using fly ash, a byproduct of coal-burning power plants, which would eventually harden and prevent the reservoir from filling with water again. Curt Anderson, orlandosentinel.com, 6 Apr. 2021 As for the reservoir, Compton said there have been discussions of using fly ash, a byproduct of coal-burning power plants, which would eventually harden and prevent the reservoir from filling with water again. Curt Anderson, ajc, 6 Apr. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fly ash.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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 27 Nov. 2022.

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

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