( n. )
The correction which is to be deducted from the apparent altitude of a heavenly body on account of atmospheric refraction, in order to obtain the true altitude.
( n. )
The correction which is to be deducted from the apparent altitude of a heavenly body on account of atmospheric refraction, in order to obtain the true altitude.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012