Astron.
the angle, measured eastward or westward through 180°, between the celestial meridian of an observer and the hour circle of a celestial body. Cf. hour angle .
Astron.
the angle, measured eastward or westward through 180°, between the celestial meridian of an observer and the hour circle of a celestial body. Cf. hour angle .
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012