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thorium |
Grep of noun thorium radiothorium thorium thorium-228 Overview of noun thorium The noun thorium has 1 sense (first 1 from tagged texts) 1. (1) thorium, Th atomic number 90 -- (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) Overview of noun thorium The noun thorium has 1 sense (first 1 from tagged texts) 1. (1) thorium, Th atomic number 90 -- (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)
thorium definition
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