Looking for the meaning of the word IONIUM in English for both noun and verb forms from the Oxford Dictionary? Below, you can explore all possible meanings and definitions of IONIUM with sentence examples. You can also use the “AUDIO PRONUNCIATION” track to check the correct pronunciation in British English.
Word: Ionium
Speech Type: Noun
Etymology:
early 20th century. From ion + -ium
Definition:
A radioactive isotope of thorium with mass number 230, produced by the alpha decay of uranium-234 and decaying in turn to radium-226 with a half-life of 75,000 years. Symbols Io, 230Th.
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