Meridian
Of great circle. May also be referred to as line of longitude.
An imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator; "all points on the same meridian have the same longitude".
This concept's ID is @1~45975
Contains
- prime meridian
Meridian at zero degree longitude from which east and west are reckoned (usually...
- observer's meridian
A meridian that passes through the observer's zenith.
- magnetic meridian
An imaginary line passing through both magnetic poles of the Earth.
- dateline
An imaginary line on the surface of the earth following (approximately) the 180th meri...