[ hahy-drog-ruh-fee ]
See synonyms for: hydrographic on Thesaurus.com

  1. the science of the measurement, description, and mapping of the surface waters of the earth, with special reference to their use for navigation.

  2. those parts of a map, collectively, that represent surface waters.

Origin of hydrography

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

Other words from hydrography

  • hy·drog·ra·pher, noun
  • hy·dro·graph·ic [hahy-druh-graf-ik], /ˌhaɪ drəˈgræf ɪk/, hy·dro·graph·i·cal, adjective
  • hy·dro·graph·i·cal·ly, adverb

Words Nearby hydrography

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use hydrography in a sentence

British Dictionary definitions for hydrography


/ (haɪˈdrɒɡrəfɪ) /

  1. the study, surveying, and mapping of the oceans, seas, and rivers: Compare hydrology

  2. 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 hydrography


[ hī-drŏgrə-fē ]

  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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.