hour angle   (TTS Sound)

The noun hour angle has 2 senses

• hour angle -- (the angular distance along the celestial equator from the observer's meridian to the hour circle of a given celestial body)


• hour angle, HA -- ((astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day)