Equatorial/ˌiːkwəˈtɔːriəl/ Definition 1 of 2Pro Tip 1/3Geography Related Often used in geography to describe climate, wildlife, or vegetation near the equator. Equatorial forests are home to diverse species. Pro Tip 2/3Climate Specific Use 'equatorial' to talk about the specific weather conditions in equatorial zones. The equatorial climate is challenging for polar explorers. Pro Tip 3/3Not Seasonal 'Equatorial' implies little seasonal variation in daylight or temperature. There's no winter in the equatorial zone.