mesothorium / ˌmɛz oʊˈθɔr i əm, -ˈθoʊr-, ˌmɛs-, ˌmi zoʊ-, -soʊ- /

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mesothorium 的定义

n. 名词 noun

Chemistry.

  1. one of two radioactive decay products of thorium, an isotope of radium or actinium.