| 释义 | 
		Definition of Greenwich meridian in English: Greenwich meridiannoun The prime meridian, which passes through the Royal Observatory at Greenwich in London. It was adopted internationally as the zero of longitude in 1884.  Example sentencesExamples -  It lies 102 ½ metres further east than the official Greenwich meridian and is the line used for all air and sea navigation.
 -  By international convention, it passes through the original site of the Royal Observatory in Greenwich, England; for this reason, it is sometimes called the Greenwich meridian.
 -  I stop just outside the front door, and am rather pleased to discover that I live exactly 0°1'2 ‘west of the Greenwich meridian.’
 -  Accurate measurements from space have led to another slight shift of the globe's most important line, and the GPS meridian now lies 102.48 metres east of the old Greenwich meridian.
 -  Here the zero lines of longitude and latitude - the Greenwich meridian and the equator - bisect.
 
    Definition of Greenwich meridian in US English: Greenwich meridiannoun The prime meridian, which passes through the Royal Observatory at Greenwich, England, adopted internationally as the earth's zero of longitude in 1884.  Example sentencesExamples -  I stop just outside the front door, and am rather pleased to discover that I live exactly 0°1'2 ‘west of the Greenwich meridian.’
 -  Here the zero lines of longitude and latitude - the Greenwich meridian and the equator - bisect.
 -  Accurate measurements from space have led to another slight shift of the globe's most important line, and the GPS meridian now lies 102.48 metres east of the old Greenwich meridian.
 -  By international convention, it passes through the original site of the Royal Observatory in Greenwich, England; for this reason, it is sometimes called the Greenwich meridian.
 -  It lies 102 ½ metres further east than the official Greenwich meridian and is the line used for all air and sea navigation.
 
     |