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).

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.

(biochemistry, incomparable) Having the quality of indirectly inducing a biological or chemical change in a system or substrate.

Pertaining to, involving, or of the nature of a trope or tropes.