trop ‧ ic /ˈtrɒpɪk $ ˈtrɑː-/ BrE AmE noun
[ Date: 1500-1600 ; Language: Latin ; Origin: tropicus 'of the point where the sun turns back having gone its furthest north and south' , from Greek , from trope ; ⇨ ↑ trophy ]
1 . [countable] one of the two imaginary lines around the world, either the Tropic of Cancer which is 23½º north of the ↑ equator , or the Tropic of Capricorn which is 23½º south of the equator
2 . the tropics the hottest part of the world, which is around the ↑ equator :
plant species found in the tropics