| 单词 | zero meridian |
| 释义 | > as lemmaszero meridian zero meridian n. (a) a meridian representing the zero of longitude; esp. the prime meridian through Greenwich; (b) (Astronomy) the meridian through the first point of Aries, from which right ascension is measured (cf. first point of Aries n. at point n.1 Phrases 5a). ΚΠ 1849 H. N. Robinson Treat. Astron. i. iii. 31 Astronomers have agreed to take that meridian for the zero meridian, which passes through the sun's center the instant the sun comes to the celestial equator, in the spring. 1939 E. D. Laborde tr. E. de Martonne Shorter Physical Geogr. (rev. ed.) 5 The reckoning always starting from the equator for latitude, and for longitude from zero meridian which may differ in different countries. 2000 CEEmail Summer 12/3 The On the Line partnership..is an educational programme to help children learn about other people living along the zero meridian. < as lemmas |
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