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By day, visitors wander past mirror-like rice paddies and mossy waterwheels—pausing at Wada House to glimpse Edo-era life with silkworm trays, saltpeter trade ledgers, and a grand Buddhist altar glowing in the hearthlight.—Lewis Nunn, Forbes.com, 24 Aug. 2025 The group worked their way through borax, boric acid, salicylic acid, benzoic acid, sulfur dioxide, formaldehyde, copper sulfate, and saltpeter– among other things.—Lauren Leffer, Popular Science, 1 May 2025 After extensive tests, Lavoisier eventually settled on a ratio of 75 percent saltpeter, 12.5 percent charcoal and 12.5 percent sulfur.—Mike Riggs, Smithsonian Magazine, 3 Apr. 2025 Sensing an opportunity, private entrepreneurs capitalized on the demand for saltpeter.—Scott Travers, Forbes, 20 Mar. 2025 The smell of wet asphalt, the weeds growing on the shore, the wounds on the gums, the old songs, the figs, the sweat, the saltpeter and the silences will be the ingredients of the ointment that will cure the illness.—Zac Ntim, Deadline, 25 Sep. 2024
Word History
Etymology
Middle English salt petre, alteration of salpetre, from Medieval Latin sal petrae, literally, salt of the rock
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