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[hahy-drog-ruh-fee] /haɪˈdrɒg rə fi/
the science of the measurement, description, and mapping of the surface waters of the earth, with special reference to their use for navigation.
those parts of a map, collectively, that represent surface waters.
1550-60; hydro-1 + -graphy
Related forms
hydrographer, noun
[hahy-druh-graf-ik] /ˌhaɪ drəˈgræf ɪk/ (Show IPA),
hydrographical, adjective
hydrographically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for hydrography
  • The science of hydrography has changed much over the last century and even the last few decades.
British Dictionary definitions for hydrography


the study, surveying, and mapping of the oceans, seas, and rivers Compare hydrology
the oceans, seas, and rivers as represented on a chart
Derived Forms
hydrographer, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for hydrography

1550s, from hydro- + -graphy. Related: Hydrographic

Online Etymology Dictionary, © 2010 Douglas Harper
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hydrography in Science
  1. The scientific description and analysis of the physical characteristics of Earth's surface waters, including temperature, salinity, oxygen saturation, and the chemical content of water. Oceanography (the study of saltwater bodies) and limnology (the study of freshwater bodies) are subsets of hydrography.

  2. The mapping of bodies of water.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for hydrography

the art and science of compiling and producing charts, or maps, of water-covered areas of the Earth's surface. A brief treatment of hydrography follows. For full treatment, see map and surveying: Hydrography.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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