Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Chemistrysaltpetresalt‧pe‧tre British English, saltpeter American English /ˌsɔːltˈpiːtə $ ˌsɒːltˈpiːtər/ noun [uncountable] HCPMWa substance used in making gunpowder (=powder that causes explosions) and matches ldoceonline.com
