Synonyms for thorium | Synonym.com

Synonyms and antonyms for thorium

1. thorium (n.)

a soft silvery-white tetravalent radioactive metallic element; isotope 232 is used as a power source in nuclear reactors; occurs in thorite and in monazite sands

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2. thorium-228 (n.)

radioactive isotope of thorium with mass number 228

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