| 单词 | prime meridian |
| 释义 | prime meridian (once / 78796 pages) n The prime meridian is the planet’s line of zero degrees longitude. Slicing the earth along the circle of the prime meridian would divide it into the Eastern and Western hemispheres — but it’s probably better to leave it in tact. Sometimes called the Greenwich Meridian or the International Meridian, Earth’s prime meridian crosses the original site of the Royal Observatory in Greenwich, England. It is the circular line by which other longitudinal lines, or meridians, are referenced — otherwise it wouldn’t be prime. You can still have a prime meridian without Greenwich, England, though; you just need to be on the moon, Jupiter, or some other celestial body. WORD FAMILYprime meridian: prime meridians USAGE EXAMPLESThe observatory, the home of Greenwich Mean Time and the Prime Meridian, first opened in 1675. Time(Sep 16, 2016) The observatory itself is a historic site, the home of Greenwich Mean Time and the Prime Meridian, first opened in 1675. Time(Jul 28, 2016) “We want our portfolio to be very diverse, geographically and by borrower types,” said Don Davis, portfolio manager at Prime Meridian Capital Management. Wall Street Journal(Apr 20, 2016) n meridian at zero degree longitude from which east and west are reckoned (usually the Greenwich longitude in England) Exp|Hyper Greenwich Meridian the meridian passing through Greenwich; was internationally adopted as the earth's zero of longitude in 1884 line of longitude, meridian an imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator |
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