longitude
noun
[ ˈlɒŋɡɪtjuːd ]
• 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.
• "at a longitude of 2° W"
Origin:
late Middle English (also denoting length and tallness): from Latin longitudo, from longus ‘long’.
