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    saltpetre

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    saltpetre

    Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++
    Related topics: Chemistry
    salt·pe·tre British English, saltpeter American English /ˌsɔːltˈpiːtə $ ˌsɒːltˈpiːtər/ noun [uncountable]  HCPMWa substance used in making gunpowder (=powder that causes explosions) and matches 硝石，硝酸钾
    salt·pe·tre nounChineseSyllable


    saltpetre
    salt‧pe‧tre British English, saltpeter American English /ˌsɔːltˈpiːtə $ ˌsɒːltˈpiːtər/ noun [uncountable]
     Date: 1300-1400
     Language: Old French
     Origin: salpetre, from Medieval Latin sal petrae 'salt of the rocks'
    a substance used in making gunpowder (=powder that causes explosions) and matches


    salt·petre (US salt·peter) BrE /ˌsɔːltˈpiːtə(r)/ 🔊, also /ˌsɒltˈpiːtə(r)/ 🔊NAmE /ˌsɔːltˈpiːtər/ 🔊 noun [uncountable] a white powder used for preserving food and making matches and gunpowder 硝石；钾硝；硝酸钾