the distance of a place east or west of the Greenwich meridian, measured in degreesthe longitude of the islandcomparelatitudeOxford Collocations Dictionaryverb + longitudecalculate,determineprepositionat (a) longitudephrasesa line of longitudeSeefull entrySee related entries:The Earth and the atmosphereWord Originlate Middle English (also denoting length and tallness): from Latin longitudo, from longus ‘long’.Extra examplesHe tried to find out how a ship at sea could determine its longitude.The town is at longitude 28° west.This line of longitude cuts through the jungle.
See longitude in the Oxford Learner's Dictionary of Academic EnglishSee longitude in the Oxford Advanced American Dictionary