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  1. Oxford American Dictionary

    celestial longitude

    • IPA[səˈlesCHəl]
    • n.
      the angular distance of a point east of the vernal equinox, measured along the ecliptic.

    • noun: celestial longitude, plural noun: celestial longitudes

    • 更多解釋

    celestial longitude

    • n.
      the angular distance of a point east of the First Point of Aries, measured along the ecliptic.

    Oxford Dictionary