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a refractory crystalline compound ThO2 obtained usually as a dense white powder by igniting thorium nitrate and used chiefly in incandescent gas mantles, in crucibles and refractories, in silica-free optical glass, and in catalysts
tooriumoksiid . EKI terminibaas Esterm. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//esterm/tooriumoksiid/1/est (07.07.2026)
