Bible Dictionaries
Thorium

Webster's Dictionary

(n.) 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.

Bibliography Information
Webster, Noah. Entry for 'Thorium'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​t/thorium.html. 1828.