/ ˈlɒŋgɪtjuːd; ˈlɒndʒɪ-; NAmE ˈlɑːndʒətuːd/ noun
[ U ] ( abbr. long. ) the distance of a place east or west of the Greenwich meridian , measured in degrees :
the longitude of the island
—compare latitude
••
WORD ORIGIN
late Middle English (also denoting length and tallness): from Latin longitudo , from longus long.