Meridian has 8 different meanings across 3 categories:
Noun · Adjective · Proper Noun
the highest level or degree attainable; the highest stage of development
"his landscapes were deemed the acme of beauty"
"the artist's gifts are at their acme"
"at the height of her career"
"the peak of perfection"
"summer was at its peak"
"...catapulted Einstein to the pinnacle of fame"
"the summit of his ambition"
"so many highest superlatives achieved by man"
"at the top of his profession"
a town in eastern Mississippi
"The historic downtown district of Meridian, Mississippi, is known for its well-preserved Victorian architecture."
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"
The south.
"The ancient sailor used his compass to find the meridian and steer directly toward the south."
Meridional; relating to a meridian.
"The ship sailed along a meridional route, staying constantly on the same line of longitude from pole to pole."
"The meridian sun was high in the sky when we arrived at noon."
A ghost town in Humboldt County, California.
"We drove through Meridian to see the ruins of its old mines under the desert sun."
The noun is derived from Late Middle English meridian, meridien ("midday, noon; position of the sun at noon; the south; longitude of a place; (astronomy) celestial meridian") [and other forms], from Anglo-Norman meridien ("midday"), Middle French meridien ("midday; the south; terrestrial meridian; (astronomy) celestial meridian") (modern French méridien), and Old French meridiane, meridiiene, and from their etymon Latin merīdiānum ("midday; position of the sun at noon; the south"), a noun use of...