tropicalness

Of or pertaining to the tropics, the equatorial region between 23 degrees north and 23 degrees south. / From or similar to a hot humid climate

A tropical plant.

plural of tropic

(geography) The region of the Earth centred on the equator and lying between the Tropic of Cancer and the Tropic of Capricorn and characterized by a hot climate.

(sciences) turning or changing / (sciences) affecting or attracted to the thing specified

Either of the two parallels of latitude 23°27′ north and south of the equator; the farthest points at which the sun can be directly overhead; the boundaries of the torrid zone or tropics.

Of, or relating to the tropics; tropical. / (weather, climate) Hot and humid.

Alternative form of tropic (one of two specific lines of latitude that divide the Northern and Southern hemispheres, respectively; the Tropic of Cancer and the Tropic of Capricorn).

In a tropical manner; of the tropics. / In a metaphorical or figurative manner; as a trope.