Bible Dictionaries
Actinium

Webster's Dictionary

(n.) A supposed metal, said by Phipson to be contained in commercial zinc; - so called because certain of its compounds are darkened by exposure to light.

Bibliography Information
Webster, Noah. Entry for 'Actinium'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​a/actinium.html. 1828.