Source : Webster's Revised Unabridged Dictionary (1913)

Ultrazodiacal \Ul`tra*zo*di"a*cal\, a. [Pref. ultra- +
   zodiacal.] (Astron.)
   Outside the zodiac; being in that part of the heavens that is
   more than eight degrees from the ecliptic; as, ultrazodiacal
   planets, that is, those planets which in part of their orbits
   go beyond the zodiac.