hydrography

noun

hy·​drog·​ra·​phy hīˈdrägrəfē How to pronounce hydrography (audio)
plural -es
1
: the description and study of seas, lakes, rivers, and other waters: such as
a
: the measurement of flow and investigation of the behavior of streams especially with reference to the control or utilization of their waters
b
: the measurement of tides and currents especially as an aid in navigation
c
: the surveying, sounding, and charting of bodies of water
2
: bodies of water or a representation of them on a map

Word History

Etymology

Middle French hydrographie, from hydr- + -graphie -graphy (from Latin -graphia)

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Cite this Entry

“Hydrography.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hydrography. Accessed 20 Dec. 2025.

Kids Definition

hydrography

noun
hy·​drog·​ra·​phy
hī-ˈdräg-rə-fē
1
: the study of bodies of water (as seas, lakes, and rivers) especially in relation to their use by people
2
: the mapping of bodies of water
hydrographer
-fər
noun
hydrographic
ˌhī-drə-ˈgraf-ik
adjective

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