longitude
/ˈlɒndʒɪtjuːd/noun
1- the angular distance of a place east or west of the Greenwich meridian, or west of the standard meridian of a celestial object, usually expressed in degrees and minutes经度：
at a longitude of 2° W
位于西经二度
mass noun lines of longitude.经线。
1.1
- Astronomy see CELESTIAL LONGITUDE.【天文】见CELESTIAL LONGITUDE.
词源
late Middle English (also denoting length and tallness)： from Latin longitudo, from longus 'long'.