the prime meridian
noun[S]
geographyspecializeduk/ˌpraɪm məˈrɪd.i.ən/us/ˌpraɪm məˈrɪd.i.ən/theimaginarylinefrom theNorthPoleto theSouthPolethatpassesthrough Greenwich inEnglandandmarks0°longitude, from which all otherlongitudesaremeasured
本初子午线（从北机到南极的一根假想线，它穿过英格兰的格林尼治，标示为经线0°，其他经线以此为测定标准）Maps & map-making
- atlas
- cartographer
- cartographic
- chart
- compass rose
- contoured
- contouring
- coord
- coordinate
- geolocation
- isotherm
- plot
- resurvey
- road map
- satnav
- site map
- survey
- the Ordnance Survey
- triangulation
- trig point
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