noun🔗Share세슘The chemical element (symbol Cs) with an atomic number of 55. It is a soft, gold-colored, highly reactive alkali metal."Example Sentence: "Because caesium is so reactive, scientists must handle it carefully in special environments to prevent dangerous reactions." "세슘은 반응성이 매우 높기 때문에 과학자들은 위험한 반응을 방지하기 위해 특별한 환경에서 조심스럽게 다루어야 합니다.elementchemistrysubstancematerialscienceChat with AIVocabulary GamePractice Reading
