柯林斯詞典ammonium nitrate 1. N a colourless highly soluble crystalline solid used mainly as a fertilizer and in explosives and pyrotechnics. Formula: NH4NO3 硝酸銨 返回 ammonium nitrate劍橋詞典a chemical compound in the form of a white powder , often used as a fertilizer (= substance to make plants grow ) and in explosives (formula NH4 NO4) 硝酸銨 返回 ammonium nitrate