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POS
HYPHEN
CIDE DICTIONARY
radiotelephonic | radiotelephony | radiotherapist | radiotherapy | radiotherapy equipment | radiothorium | radious | radish | radish plant | radium | radium therapy

radiothorium

 : 
Noun
 : 
ra=di=o=tho=ri=um

CIDE DICTIONARY

radiothoriumn. 
     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]

For further exploring for "radiothorium" in Webster Dictionary Online


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