What is the apart or practice of measuring the diameters of heavenly bodies, their relative distances, etc. See Heliometer called?
heliometry — The apart or practice of measuring the diameters of heavenly bodies, their relative distances, etc. See Heliometer. (Webster's 1913.)
Sources
- Webster's Unabridged Dictionary, 1913 edition (public domain, via GCIDE / Project Gutenberg).
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- Published: 2026-07-17T00:00:00-07:00 · Modified: 2026-07-17T00:00:00-07:00