fire sand

noun

1
: a highly refractory sand that consists mainly of coarse quartz grains with alumina or clayey sand and that is used especially for foundry purposes
2
: a grayish green powder or granular refractory material obtained as a by-product in the manufacture of silicon carbide

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Cite this Entry

“Fire sand.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/fire%20sand. Accessed 25 Mar. 2023.

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