HELIOMETRY
Source: 567
He′li‐om″e‐try (?), n. The apart or practice of measuring the diameters of heavenly bodies, their relative distances, etc. See Heliometer.
Source: 567
He′li‐om″e‐try (?), n. The apart or practice of measuring the diameters of heavenly bodies, their relative distances, etc. See Heliometer.