[mɪˈrɪdɪən], (Noun)

Definitions:
- a circle of constant longitude passing through a given place on the earth's surface and the terrestrial poles
(e.g: 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
(e.g: the slow movements and postures of t'ai chi open up and align the meridians of the body)


Phrases:

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

[mɪˈrɪdɪən], (Adjective)

Definitions:
- relating to or situated at a meridian
(e.g: the meridian moon)


Phrases:

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