mesothorium

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English[edit]

Etymology[edit]

meso- +‎ thorium

Noun[edit]

mesothorium (plural mesothoriums)

  1. (physics) Any product of the radioactive decay of thorium, mainly isotopes of radium and actinium

Usage notes[edit]

Mesothorium I is radium-228. Mesothorium II is actinium-228.

Translations[edit]