1. An imaginary line around the Earth forming the great circle that is equidistant from the north and south poles
   "the equator is the boundary between the northern and Southern Hemispheres"
    
2. A circle dividing a sphere or other surface into two usually equal and symmetrical parts
   "The equator divides the Earth into the Northern and Southern Hemispheres"

Derived forms: equators

Type of: circle, great circle

Encyclopedia: Equator