noun lon·gi·tude \ˈlän-jə-ˌtüd, -ˌtyüd, British also ˈläŋ-gə-\

: distance measured in degrees east or west from an imaginary line (called the prime meridian) that goes from the North Pole to the South Pole and that passes through Greenwich, England

: an imaginary line that circles the Earth at a particular longitude

Full Definition of LONGITUDE

a :  angular distance measured on a great circle of reference from the intersection of the adopted zero meridian with this reference circle to the similar intersection of the meridian passing through the object
b :  the arc or portion of the earth's equator intersected between the meridian of a given place and the prime meridian and expressed either in degrees or in time
archaic :  long duration

Examples of LONGITUDE

  1. a map of the world showing lines of latitude and longitude
  2. calculating the longitudes of different places
  3. The regions are on roughly the same longitude.

Illustration of LONGITUDE


Middle English, from Latin longitudin-, longitudo, from longus
First Known Use: 14th century
LONGITUDE Defined for Kids


noun lon·gi·tude \ˈlän-jə-ˌtüd, -ˌtyüd\

Definition of LONGITUDE for Kids

:  distance measured in degrees east or west of an imaginary line that runs from the north pole to the south pole and passes through Greenwich, England
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