What does radiothorium mean?

Definitions for radiothorium

This dictionary definitions page includes all the possible meanings, example usage and translations of the word radiothorium.

Princeton's WordNet

  1. thorium-228, radiothoriumnoun

    radioactive isotope of thorium with mass number 228


  1. radiothoriumnoun

    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.


  1. radiothoriumnoun

    The radioactive isotope thorium-228


  1. radiothorium

    Thorium (90Th) has seven naturally occurring isotopes but none are stable. One isotope, 232Th, is relatively stable, with a half-life of 1.405×1010 years, considerably longer than the age of the Earth, and even slightly longer than the generally accepted age of the universe. This isotope makes up nearly all natural thorium, so thorium was considered to be mononuclidic. However, in 2013, IUPAC reclassified thorium as binuclidic, due to large amounts of 230Th in deep seawater. Thorium has a characteristic terrestrial isotopic composition and thus a standard atomic weight can be given. Thirty-one radioisotopes have been characterized, with the most stable being 232Th, 230Th with a half-life of 75,380 years, 229Th with a half-life of 7,917 years, and 228Th with a half-life of 1.92 years. All of the remaining radioactive isotopes have half-lives that are less than thirty days and the majority of these have half-lives that are less than ten minutes. One isotope, 229Th, has a nuclear isomer (or metastable state) with a remarkably low excitation energy, recently measured to be 8.28 ± 0.17 eV. It has been proposed to perform laser spectroscopy of the 229Th nucleus and use the low-energy transition for the development of a nuclear clock of extremely high accuracy.The known isotopes of thorium range in mass number from 207 to 238.


  1. radiothorium

    Radiothorium, also known as thorium-228, is a radioactive isotope of thorium that was discovered by Otto Hahn and Ernst Walling in 1905. It is a decay product of uranium-232 and it further decays into radium-224 through alpha decay. It was formerly used in medicine for radiotherapy but has been largely superseded by other materials.

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How to say radiothorium in sign language?


  1. Chaldean Numerology

    The numerical value of radiothorium in Chaldean Numerology is: 8

  2. Pythagorean Numerology

    The numerical value of radiothorium in Pythagorean Numerology is: 7


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"radiothorium." Definitions.net. STANDS4 LLC, 2024. Web. 23 May 2024. <https://www.definitions.net/definition/radiothorium>.

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    a deliberately offensive act or something producing the effect of deliberate disrespect
    A efface
    B abash
    C affront
    D denudate

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