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Ultratropical
- Situated beyond, or outside of, the tropics; extratropical; also, having an excessively tropical temperature; warmer than the tropics.
Ultrazodiacal
- 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.
Ulula
- A genus of owls including the great gray owl (Ulula cinerea) of Arctic America, and other similar species. See Illust. of Owl.
Umbecast
- To cast about; to consider; to ponder.
Umbellated
- Bearing umbels; pertaining to an umbel; umbel-like; as, umbellate plants or flowers.
Umbellet
- A small or partial umbel; an umbellule.
Umbellic
- Pertaining to, or obtained from, certain umbelliferous plants; as, umbellic acid.