单词	protium
释义	protium noun pro·​ti·​um ˈprō-tē-əm  ˈprō-shē- : the ordinary light hydrogen isotope of atomic mass 1 Example Sentences Recent Examples on the Web The fuel sources are far better than protium, but the extra neutrons are sprayed around and can cause problems. Caroline Delbert, Popular Mechanics, 16 Feb. 2022 Word History Etymology New Latin, from Greek prōtos first First Known Use 1933, in the meaning defined above Medical Definition protium noun pro·​ti·​um ˈprōt-ē-əm  ˈprō-shē-  : the ordinary light hydrogen isotope of atomic mass 1
随便看	animal spirits animal starch animal step animal unit animal-sized animalcula animalcular animalcule animalcules animalculine animalculism animalculist animalculists animalculous animalculum animalia animaliae animalian animalias animalic animalier animaliers animalisatia animalisation animalisations

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。