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English definition of “saltpetre”

saltpetre

noun [U] UK (US saltpeter)     /ˌsɒltˈpiː.tər/ US  /ˈsɑːltˌpiː.t̬ɚ/
a salty-tasting white powder used to preserve meat , and also used in producing explosives and fertilizers (= substances that help plants grow )Improving fertility and pest controlPreserving and storing food
(Definition of saltpetre noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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