the distance east or west of the Greenwich meridian (=an imaginary line from the top of the Earth to the bottom), measured in degrees and minutes. Latitude is the distance north or south of the equator.
Synonyms and related words
Imaginary lines around the earth
the Antarctic Circle
the Arctic Circle
the date line
longitude
noun countable/uncountable
US /ˈlɑndʒɪˌtud/
Word Forms
singular
longitude
plural
longitudes
DEFINITIONS1
1
the distance east or west of the Greenwich meridian (=an imaginary line from the top of the Earth to the bottom) in England, measured in degrees and minutes. Latitude is the distance north or south of the equator.