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WordReference Random House Unabridged Dictionary of American English © 2024zinc′ sul′fate, [Chem.]- Chemistrya colorless, crystalline, water-soluble powder, ZnSO4·7H2O, used for preserving skins and wood, in the electrodeposition of zinc, in the bleaching of paper, as a mordant in calico printing, and in medicine as an astringent, styptic, and emetic. Also called white vitriol, zinc′ vit′riol.
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