Function: noun
Date: circa 1837
: the angle between the celestial meridian of an observer and the hour circle of a celestial object measured westward from the meridian
Function: noun
Date: circa 1837
: the angle between the celestial meridian of an observer and the hour circle of a celestial object measured westward from the meridian
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012