Bible Dictionaries
Helioscope

Webster's Dictionary

(n.) A telescope or instrument for viewing the sun without injury to the eyes, as through colored glasses, or with mirrors which reflect but a small portion of light.

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