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English to English noun
| 1 |
an imaginary line around the Earth forming the great circle that is equidistant from the north and south poles |  | Example: the equator is the boundary between the northern and southern hemispheres
source: wordnet30
| 2 |
a circle dividing a sphere or other surface into two usually equal and symmetrical parts | | source: wordnet30
| 3 |
The imaginary great circle on the earth's surface, everywhere equally distant from the two poles, and dividing the earth's surface into two hemispheres. | | source: webster1913
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