- Lines, Meridian
Earlier Established Forms
- found: Work 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)
- found: 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)
- 2002-02-05: new
- 2002-03-27: revised
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