the part of the Earth's surface between the Tropic of Cancer and the Tropic of Capricorn; characterized by a hot climate
"The lush rainforests thriving in the tropics provide a stark contrast to the icy landscapes found at higher latitudes."
plural of tropic
"We spent our summer vacation in the tropics, where the sun shone brightly every single day and the air was always warm and humid."
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.