- Lines, Meridian
- Meridian lines
Earlier Established Forms
Meridian linesMeridian lines
- found: 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. Herit. 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; also has definitions from mathematics and other fields)
- 2002-01-03: new
- 2002-03-27: revised
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