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WordReference Random House Unabridged Dictionary of American English © 2024so′dium ni′trate, [Chem.]- Chemistry, Nutritiona crystalline, water-soluble compound, NaNO3, that occurs naturally as soda niter: used in fertilizers, explosives, and glass, and as a color fixative in processed meats.
Collins Concise English Dictionary © HarperCollins Publishers:: sodium nitrate n - a white crystalline soluble solid compound occurring naturally as Chile saltpetre and caliche and used in matches, explosives, and rocket propellants, as a fertilizer, and as a curing salt for preserving food such as bacon, ham, and cheese (E251). Formula: NaNO3
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