| Word | Definitions | Synonyms |
|---|---|---|
| semitropics | (noun) regions adjacent to the tropics | Synonyms: subtropics |
| subtropics | (noun) regions adjacent to the tropics | Synonyms: semitropics |
| tropics | (noun) the part of the Earth's surface between the Tropic of Cancer and the Tropic of Capricorn; characterized by a hot climate | Synonyms: Torrid Zone, tropical zone |