Radiothorium definition

Radiothorium





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2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  radiothorium \ra`di*o*tho"ri*um\
     (r[=a]`d[i^]*[o^]*th[^o]r"[=e]*[u^]m), n. (Chem.)
     an earlier name for the thorium isotope {thorium-228}, given
     by its discoverer Otto Hahn. It is a radioactive substance
     formed as one of series of products in the chain of
     radioactive decay of thorium. Its immediate predecessor in


     the chain is Actinium-228, and it decays by alpha emission to
     radium-224 with a half-life of 1.91 years. The name
     radiothorium was given prior to the full understanding of the
     nature of isotopes of elements.
     [PJC]

From WordNet (r) 2.0 [wn]:

  radiothorium
       n : radioactive isotope of thorium with mass number 228 [syn: {thorium-228}]

















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