fly ash

noun
Updated on: 8 Nov 2017

Definition of fly ash

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

Recent Examples of fly ash from the Web

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.

First Known Use of fly ash

1931


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