Definition of mesothorium in English:

mesothorium

noun ˌmɛsə(ʊ)ˈθɔːrɪəm

Chemistry

Either of two radioactive nuclides in the thorium series: "mesothorium I" (symbol MsThI), the isotope of radium with mass number 228, produced by the alpha decay of thorium 232, or "mesothorium II" (symbol MsThII), the isotope of actinium with mass number 228, produced by the beta decay of mesothorium I.

Early 20th century; earliest use found in Journal of the Chemical Society. From scientific Latin Mesothorium from Meso- + -thorium.

nounˌmɛsə(ʊ)ˈθɔːrɪəm

Chemistry

Either of two radioactive nuclides in the thorium series: "mesothorium I" (symbol MsThI), the isotope of radium with mass number 228, produced by the alpha decay of thorium 232, or "mesothorium II" (symbol MsThII), the isotope of actinium with mass number 228, produced by the beta decay of mesothorium I.

Early 20th century; earliest use found in Journal of the Chemical Society. From scientific Latin Mesothorium from Meso- + -thorium.

单词	mesothorium
释义	Definition of mesothorium in English: mesothorium noun ˌmɛsə(ʊ)ˈθɔːrɪəm Chemistry Either of two radioactive nuclides in the thorium series: "mesothorium I" (symbol MsThI), the isotope of radium with mass number 228, produced by the alpha decay of thorium 232, or "mesothorium II" (symbol MsThII), the isotope of actinium with mass number 228, produced by the beta decay of mesothorium I. Origin Early 20th century; earliest use found in Journal of the Chemical Society. From scientific Latin Mesothorium from Meso- + -thorium. Definition of mesothorium in US English: mesothorium nounˌmɛsə(ʊ)ˈθɔːrɪəm Chemistry Either of two radioactive nuclides in the thorium series: "mesothorium I" (symbol MsThI), the isotope of radium with mass number 228, produced by the alpha decay of thorium 232, or "mesothorium II" (symbol MsThII), the isotope of actinium with mass number 228, produced by the beta decay of mesothorium I. Origin Early 20th century; earliest use found in Journal of the Chemical Society. From scientific Latin Mesothorium from Meso- + -thorium.
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