tropic

noun
🔊/ˈtrɒpɪk/
🔊/ˈtrɑːpɪk/
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  1. [countable, usually singular] one of the two imaginary lines drawn around the world 23° 26′ north (the Tropic of Cancer) or south (the Tropic of Capricorn) of the equator回归线(北回归线称 the Tropic of Cancer,南回归线称 the Tropic of Capricorn)Topics Geographyc1
  2. the tropics
    [plural] the area between the two tropics, which is the hottest part of the world 热带;热带地区synonym torrid zone
  3. Word Originlate Middle English (denoting the point on the ecliptic reached by the sun at the solstice): via Latin from Greek tropikos, from tropē ‘turning’, from trepein ‘to turn’.