| 单词 | potassium nitrate |
| 释义 | potassium /pə-tasˈi-əm/nounA silvery alkaline metallic element (symbol K; atomic no 19) discovered by Davy in 1807 in potash, occurring naturally in compounds ORIGIN: potass (see potash) or potassa potassˈic adjective potassium-argon dating noun Estimation of the date or prehistoric mineral formation from the proportion of potassium-40 to argon-40, the latter having developed from the former by radioactive decay and being trapped in the rock potassium carbonate noun A white deliquescent substance used in manufacturing glass and soap (see also potash) potassium chlorate noun A soluble crystalline substance that is a powerful oxidizing agent and is used in manufacturing explosives, fireworks and matches potassium chloride noun A crystalline substance used as a fertilizer and in photographic processing potassium cyanide noun A poisonous soluble solid used esp in extracting gold and silver from their ores potassium hydrogen carbonate noun A white crystalline powder used in baking powder, carbonated soft drinks and as an antacid potassium hydrogen tartrate noun Cream of tartar (qv) potassium hydroxide noun A white deliquescent substance used in manufacturing liquid soaps, shampoos and detergents, caustic potash potassium iodide noun A crystalline solid used in photography, also added to table salt to prevent iodine deficiency potassium nitrate noun A crystalline oxidizing agent used as a meat preservative, fertilizer and in explosives potassium permanganate noun A purple crystalline oxidizing agent used as a disinfectant and in analytical chemistry potassium sorbate noun A substance used as an antifungal food perservative potassium sulphate noun A soluble substance used in glass-making and as a fertilizer |
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