southing

southing
noun
  1. [mass noun]distance travelled or measured southward, especially at sea
    (尤指在海上的)南行航程
    ■[count noun]a figure or line representing southward distance on a map
    地图上代表南行距离的数字或线
    ■(Astronomy)the transit of a celestial object, especially the sun, across the meridian due south of the observer
    (天文)南中天
    ■[count noun](Astronomy)the angular distance of a star or other object south of the celestial equator
    (天文)南赤纬
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