[ 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.


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Origin of hydrography

First recorded in 1550–60; hydro-1 + -graphy

OTHER WORDS FROM hydrography

hy·drog·ra·pher, nounhy·dro·graph·ic [hahy-druh-graf-ik] /ˌhaɪ drəˈgræf ɪk/, hy·dro·graph·i·cal, adjectivehy·dro·graph·i·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for hydrographic

British Dictionary definitions for hydrographic (1 of 2)

/ (ˌhaɪdrəˈɡræfɪk) /


of or relating to hydrographics

Derived forms of hydrographic

hydrographical, adjectivehydrographically, adverb

British Dictionary definitions for hydrographic (2 of 2)

/ (haɪˈdrɒɡrəfɪ) /


the study, surveying, and mapping of the oceans, seas, and riversCompare hydrology
the oceans, seas, and rivers as represented on a chart

Derived forms of hydrography

hydrographer, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for hydrographic

[ hī-drŏgrə-fē ]

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.
The mapping of bodies of water.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.