meridian
noun
[ məˈrɪdɪən ]
• a circle of constant longitude passing through a given place on the earth's surface and the terrestrial poles.
• "the European Broadcasting Area extends from the Atlantic to the meridian 40°E"
• (in acupuncture and Chinese medicine) each of a set of pathways in the body along which vital energy is said to flow.
• "the slow movements and postures of t'ai chi open up and align the meridians of the body"
meridian
adjective
• relating to or situated at a meridian.
• "the meridian moon"
Origin:
late Middle English: from Old French meridien, from Latin meridianum (neuter, used as a noun) ‘noon’, from medius ‘middle’ + dies ‘day’. The use in astronomy is due to the fact that the sun crosses a meridian at noon.
