meridian angleSee hour angle.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006
meridian angle[mə′rid·ē·ən ‚aŋ·gəl]
Angular distance east or west of the local celestial meridian; the arc of the celestial equator, or the angle at the celestial pole, between the upper branch of the local celestial meridian and the hour circle of a celestial body, measured eastward or westward from the local celestial meridian through 180°, and labeled E or W to indicate the direction of measurement.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.