Equator
- Proper noun. The Earth’s equator.
- Noun. (context, often) An imaginary great circle around the Earth, equidistant from the two poles, and dividing earth's surface into the northern and southern hemisphere.
- Noun. A similar great circle on any sphere, especially on a celestial body, or on other reasonably symmetrical three-dimensional body.
- Noun. A short form of the celestial equator.
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This entry was last updated on RefTopia from its source on 3/20/2012.