noun
1. : the region of the earth enclosed within the annual isotherms of 80° including the northern part of So. America and the greater part of Africa and India
2. : the middle line of the thermal equator belt
noun
1. : the region of the earth enclosed within the annual isotherms of 80° including the northern part of So. America and the greater part of Africa and India
2. : the middle line of the thermal equator belt
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012