meridian

The word meridian describes a gigantic imaginary circle that runs north and south on the earth's surface, from the North Pole to the South Pole. If you stood on the meridian at the North Pole, you would be at the earth's northernmost point.

Meridian can also refer to the highest stage of development. The meridian of your chess career may have been when you took out the champ from a rival school. Used as an adjective, meridian can describe something that's at the best stage of development. Your favorite skater was at his meridian form when he won the Olympic gold medal. Meridian can also describe something that takes place at noon, like your meridian boat voyage that launched precisely at noon.

Primary Meanings of meridian

1.
n
an imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator
2.
nadj
the highest level or degree attainable; the highest stage of development
being at the best stage of development
3.
adj
of or happening at noon
Full Definitions of meridian
1

n 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”
Synonyms:
line of longitude
Examples:
International Date Line
an imaginary line on the surface of the earth following (approximately) the 180th meridian
Types:
observer's meridian
a meridian that passes through the observer's zenith
prime meridian
meridian at zero degree longitude from which east and west are reckoned (usually the Greenwich longitude in England)
magnetic meridian
an imaginary line passing through both magnetic poles of the Earth
Type of:
great circle
a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center
2

n the highest level or degree attainable; the highest stage of development

Synonyms:
acme, elevation, height, peak, pinnacle, summit, superlative, tiptop, top
Type of:
degree, level, point, stage
a specific identifiable position in a continuum or series or especially in a process

adj being at the best stage of development

Synonyms:
prime
mature
having reached full natural growth or development
3

adj of or happening at noon

meridian hour”

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