| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024e•qua•tor /ɪˈkweɪtɚ/USA pronunciation n. [countable]- Geographyan imaginary line that is thought of as circling the earth and is the same distance from the North Pole and South Pole.
WordReference Random House Unabridged Dictionary of American English © 2024e•qua•tor (i kwā′tər),USA pronunciation n. - Geography, Place Namesthe great circle on a sphere or heavenly body whose plane is perpendicular to the axis, equidistant everywhere from the two poles of the sphere or heavenly body.
- Geographythe great circle of the earth that is equidistant from the North Pole and South Pole.
- a circle separating a surface into two congruent parts.
- AstronomySee celestial equator.
- Medieval Latin aequātor, Latin: equalizer (of day and night, as when the sun crosses the equator). See equate, -tor
- Middle English 1350–1400
Collins Concise English Dictionary © HarperCollins Publishers:: equator /ɪˈkweɪtə/ n - the great circle of the earth with a latitude of 0°, lying equidistant from the poles; dividing the N and S hemispheres
- a circle dividing a sphere or other surface into two equal symmetrical parts
- See celestial equator
Etymology: 14th Century: from Medieval Latin (circulus) aequātor (diei et noctis) (circle) that equalizes (the day and night), from Latin aequāre to make equal |