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From The Collaborative International Dictionary of English v.0.48:
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. [1913 Webster]