The tropics are the parts of the world that lie between two lines of latitude, the Tropic of Cancer, 23½° north of the equator, and the Tropic of Capricorn, 23½° south of the equator.
tropics in British English
(ˈtrɒpɪks)
plural noun
the tropics
tropics in American English
[alsoT-]
region of the earth lying between the Tropic of Cancer & the Tropic of Capricorn; Torrid Zone