名詞 meridian:

1. the highest level or degree attainable; the highest stage of development
   同義詞：acme, height, elevation, peak, pinnacle, summit, superlative, tiptop, top
2. a town in eastern Mississippi
3. an imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator
   同義詞：line of longitude

形容詞 meridian:

1. of or happening at noon
2. being at the best stage of development- Robert Browning
   同義詞：prime

1. P.M. is short for post meridian. P.M.
   是下午的縮寫。
2. The angular distance north or south of the earth's equator, measured in degrees along a meridian, as on a map or globe.
   緯度地球赤道北或南的角距離，例如在地圖或地球儀上沿著子午線用度數(shù)測量
3. He is at the meridian of life.
   他正值壯年。

me.rid.i.an

n.Abbr. m.,M.,mer.（名詞）縮寫 m.,M.,mer.

An imaginary great circle on the earth`s surface passing through the North and South geographic poles. All points on the same meridian have the same longitude.
過兩極的大圓：一個通過地球表面南北兩極的假想線圈。同一子午線上的所有點都具有相同的經(jīng)度
Either half of such a great circle from pole to pole.
子午線：從極點到極點的大線圈的一半
Astronomy A great circle passing through the two poles of the celestial sphere and the zenith of a given observer.
【天文學】 天體的經(jīng)線：通過天體上兩極和一假定觀測物天頂?shù)拇笕?/br>Mathematics
【數(shù)學】
A curve on a surface of revolution, formed by the intersection of the surface with a plane containing the axis of revolution.
回轉面曲線：回轉面與通過旋轉軸的平面相交而形成的位于回轉面上的曲線
A plane section of a surface of revolution containing the axis of revolution.
切平面：通過旋轉軸回轉面的部分平面
Any of the longitudinal lines or pathways on the body along which the acupuncture points are distributed.
經(jīng)脈；經(jīng)絡：任一分布在身體上針炙點所呈現(xiàn)的縱向線或軌跡
Archaic
【古語】
The highest point in the sky reached by the sun or another celestial body; a zenith.
天頂：太陽或別的天體在天空中所達到的最高點；天頂
Noon.
正午
The highest point or stage of development; peak:
鼎盛，顛峰：發(fā)展的最高點或最高階段；頂峰：
例句：
.Men come to their meridian at various periods of their lives.(John Henry Newman)
.男人在其一生中達到全盛時期的時間是不同的.(約翰·亨利·紐曼)

Upper Midwest See median strip See Regional Note at neutral ground
【中西部偏北】 參見 median strip參見 neutral ground
adj.（形容詞）
Of or relating to a meridian; meridional.
經(jīng)線的，子午線的：子午線的或與子午線有關的；經(jīng)線的
Of or at midday:
正午的或在正午的：
例句：
the meridian hour.
正午時刻

Of, relating to, or constituting the highest point, as of development or power:
頂點的：頂點的、與頂點有關的或構成頂點的，如發(fā)展或權力：
例句：
the empire in its meridian period.
處于全盛時期的帝國

來源：
Middle English
中古英語
from Old French [midday]
源自 古法語 [正午]
from Latin merodi3nus [of midday]
源自 拉丁語 merodi3nus [正午的]
from merodiôs [midday]
源自 merodiôs [正午]
from merodiô [at midday]
源自 merodiô [在正午]
from Old Latin *mediei diô
源自 古拉丁語 *mediei diô
*mediei [dative (locative) of] medius [middle] * see medhyo-
*mediei [] medius的與格（位置格） [中間的] *參見 medhyo-
diô [dative of] diôs [day] * see deiw-
diô [] diôs的與格 [白天] *參見 deiw-