ETYM French méridien. Related to Meridian.
Highest point; Geography, circle passing through both poles and any given place.
Half a great circle drawn on the Earth's surface passing through both poles and thus through all places with the same longitude. Terrestrial longitudes are usually measured from the Greenwich Meridian.
An astronomical meridian is a great circle passing through the celestial pole and the zenith (the point immediately overhead).
An imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator; SYN. longitude, line of longitude. + prikaži više