meridian
英 [mə'rɪdɪən]
美[mə'rɪdɪən]
- adj. 子午线的；最高点的
- n. [天] 子午线，[天] 经线；顶点
英英释意
- 1. 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"