Bible Dictionaries
Heliometry

Webster's Dictionary

(n.) The apart or practice of measuring the diameters of heavenly bodies, their relative distances, etc. See Heliometer.

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