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Meridians (Astronomy)

LC control no.sh2002004369
LC classificationQB207
Topical headingMeridians (Astronomy)
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Variant(s)Lines, Meridian
Meridian lines
See alsoAstronomical geography
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Spherical astronomy
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Found inWork cat.: McGraw-Hill dict. sci. tech. terms (meridian [ASTRON] 1. A great circle passing through the poles of the axis of rotation of a planet or satellite. 2. See celestial meridian [GEOD] A north-south reference line, particularly a great circle through the geographical poles of the earth)
Amer. her. dict. (meridian: 1a. An imaginary great circle on the earth's surface passing through the North and South geographic poles. All points on the same meridian have the same longitude. b. Either half of such a great circle from pole to pole. 2. Astronomy. A great circle passing through the two poles of the celestial sphere and the zenith of a given observer)
Invalid LCCNsh 85083836