The Collaborative International Dictionary
Ultratropical
Ultratropical \Ul`tra*trop"ic*al\, a. [Pref. ultra- + tropical.] Situated beyond, or outside of, the tropics; extratropical; also, having an excessively tropical temperature; warmer than the tropics.
Wiktionary
ultratropical
a. 1 Situated beyond, or outside of, the tropics. 2 Having an excessively tropical temperature; warmer than the tropics.