(Science: chemistry) A metallic element found in certain rare minerals, as thorite, pyrochlore, monazite, etc, and isolated as an infusible gray metallic powder which burns in the air and forms thoria; formerly called also thorinum. Symbol th. Atomic weight 232.0.
Origin: NL. See Thorite.
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... The air we breathe is laden with asbestos-sized synthetic fibers and toxic metals, including barium salts, aluminum, and reportedly, radioactive thorium.9 These materials act as electrolytes to enhance conductivity of military radar and radio waves.10 Poisonous on par with arsenic and a proven ...
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