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    caesium

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    caesium

    Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++
    Related topics: Elements
    cae·si·um British English, cesium American English /ˈsiːziəm/ noun [uncountable]  a soft silver-white metal that is used in photoelectric cells. It is a chemical element: symbol Cs 铯〔一种化学元素，符号为Cs〕
    Examples from the Corpus
    caesium• It had a caesium 137 concentration of only 4 becquerels per kilogram.• The best caesium clocks achieve a fractional accuracy and stability of between 10 -13; and 10 -14;.• The study stresses that the levels of caesium observed do not pose any risk to health.• The caesium chloride lattice is thus said to have 8:8 coordination.• The caesium chloride structure, for example, consists of a cubic structure of cations and a cubic structure of anions.    Origin caesium (1800-1900) Latin caesius “bluish grey”
    cae·si·um nounChineseSyllable
    silver-white soft photoelectric a Corpus cells. used metal in It is that


    caesium
    cae‧si‧um British English, cesium American English /ˈsiːziəm/ noun [uncountable]
     Date: 1800-1900
     Language: Latin
     Origin: caesius 'bluish grey'
    a soft silver-white metal that is used in photoelectric cells. It is a chemical element: symbol Cs


    cae·sium (BrE) (NAmE ces·ium) BrE /ˈsiːziəm/ 🔊NAmE /ˈsiːziəm/ 🔊 noun [uncountable] (symbol Cs) a chemical element. Caesium is a soft silver-white metal that reacts strongly in water, used in photoelectric cells. 铯