Relating to a meridian (in various senses); meridional. / (archaic except literary) Relating to midday or noon. / Relating to the culmination or highest point.

In full celestial meridian: a great circle passing through the poles of the celestial sphere and the zenith for a particular point on the Earth's surface.

(transitive) To cause an object to reach the meridian or highest point of (something). / (intransitive) Of a celestial body: to reach its meridian.

(acupuncture, traditional Chinese medicine) Any of the pathways on the body along which chi or qi (life force) is thought to flow and, therefore, the acupoints are distributed; especially, one of twelve such pathways associated with organs of the body.

A ghost town in Humboldt County, California. / An unincorporated community in Kern County, California. / A neighborhood of San Jose, Santa Clara County, California.

Along the lines of meridian, longitudinally.

plural of meridian

Alternative form of meridional

present participle of meridian

(rare) Having one or more meridians.