green sand

noun

An aggregate of sand, bentonite clay, pulverized coal, and water, used in making moulds for metal casting.

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Meanings

noungreen sand (countable and uncountable, plural green sands)

plural green sands

  1. countableuncountableAn aggregate of sand, bentonite clay, pulverized coal, and water, used in making moulds for metal casting.

Origin

Green in the sense of being used in a wet state (akin to green wood).

Full word history & related roots →
Cite this entry
APA

green sand. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/green%20sand

MLA

“green sand.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/green%20sand. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “green sand,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/green%20sand.

Source: green sand on Wiktionary, CC BY-SA 4.0.