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Definition of Contour interval

Contour interval Definition from Government Dictionaries & Glossaries
DOD Dictionary of Military Terms
(*) Difference in elevation between two adjacent contour lines.
  
Source: U.S. Department of Defense, Joint Doctrine Division. ( About )
Contour interval Definition from Science & Technology Dictionaries & Glossaries
Glossary of Cartographic Terms
Difference in elevation between two adjacent contours.
Contour interval Definition from Society & Culture Dictionaries & Glossaries
Outdoor Glossary
the difference in elevation (height) between one contour line and the next. This interval is either expressed in feet or meters.