1. an imaginary line around the middle of the Earth at an equal distance from the North and South poles
Usage: geography
2. a similar imaginary line around the middle of any planet or celestial body
Usage: astronomy

Examples

• The equator divides the Earth into the Northern and Southern hemispheres.
• Countries near the equator have hot, tropical climates year-round.
• Ecuador got its name because it sits on the equator.
• The equator is approximately 24,901 miles long.
• Scientists study Jupiter’s equator to understand the planet’s rotation.
• Many tropical rainforests are located near the equator.
• The equator passes through thirteen countries including Brazil and Kenya.