Bible Dictionaries
Phosphoroscope
Webster's Dictionary
(n.) An apparatus for observing the phosphorescence produced in different bodies by the action of light, and for measuring its duration.
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Bibliography Information
Webster, Noah. Entry for 'Phosphoroscope'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​p/phosphoroscope.html. 1828.