great circle
English Thesaurus
1. a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center (noun.location)
| hypernym | : | line, |
| definition | : | a spatial location defined by a real or imaginary unidimensional extent (noun.location) |
| hyponym | : | ecliptic, |
| definition | : | the great circle representing the apparent annual path of the sun; the plane of the Earth's orbit around the sun; makes an angle of about 23 degrees with the equator (noun.location) |
| hyponym | : | equator, |
| definition | : | an imaginary line around the Earth forming the great circle that is equidistant from the north and south poles (noun.location) |
| hyponym | : | celestial horizon, horizon, |
| definition | : | the great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth (noun.location) |
| hyponym | : | hour circle, |
| definition | : | a great circle on the celestial sphere that passes through both celestial poles (noun.location) |
| hyponym | : | line of longitude, meridian, |
| definition | : | an imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator (noun.location) |
| hyponym | : | vertical circle, |
| definition | : | a great circle on the celestial sphere passing through the zenith and perpendicular to the horizon (noun.location) |
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