WordReference Random House Learner's Dictionary of American English © 2016
lon•gi•tude /ˈlɑndʒɪˌtud, -ˌtyud/USA pronunciation   n. 
  1. Geographythe distance east or west on the earth's surface, as measured in degrees from the meridian of some particular place to the prime meridian at Greenwich, England: [uncountable]sixty degrees in longitude.[countable]measuring longitudes.

WordReference Random House Unabridged Dictionary of American English © 2016
lon•gi•tude  (lonji to̅o̅d′, -tyo̅o̅d′), 
  1. Geography, Place Names[Geog.]angular distance east or west on the earth's surface, measured by the angle contained between the meridian of a particular place and some prime meridian, as that of Greenwich, England, and expressed either in degrees or by some corresponding difference in time.
    • See celestial longitude. 
    • See galactic longitude. 
  • Latin longitūdō length. See longi-, -tude
  • Middle English 1350–1400

Collins Concise English Dictionary © HarperCollins Publishers::

longitude /ˈlɒndʒɪˌtjuːd ˈlɒŋɡ-/ n
  1. distance in degrees east or west of the prime meridian at 0° measured by the angle between the plane of the prime meridian and that of the meridian through the point in question, or by the corresponding time difference
    See latitude
Etymology: 14th Century: from Latin longitūdō length, from longus long1

'longitude' also found in these entries:

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