IPA: //sʌbˈtrɒpɪk//
KK: /sʌbˈtrɑpɪk/
A region that is located just outside the tropics, typically characterized by warm temperatures and distinct seasons.
The subtropic areas of the world often have a mix of tropical and temperate climate features.
Subtropic → It is formed from "sub-" (meaning under or below) and "tropic" (from Greek "tropikos", meaning pertaining to a turn or change, specifically referring to the tropics). The word "subtropic" refers to regions that are located just below the tropics, indicating a climate that is similar but not quite tropical.
Think of being 'under' ('sub-') the 'tropics' — that's why subtropic refers to areas just below the tropical regions.