equator

n. 赤道

中緯線

學術名詞

• 赤道：地理學、數學、天文學、地球科學、物理學、測量學
• 赤道[天]：力學

英文釋義

1. an imaginary line around the Earth forming the great circle that is equidistant from the north and south poles
2. a circle dividing a sphere or other surface into two usually equal and symmetrical parts