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oceanography

American  
[oh-shuh-nog-ruh-fee, oh-shee-uh-] / ˌoʊ ʃəˈnɒg rə fi, ˌoʊ ʃi ə- /

noun

  1. the branch of physical geography dealing with the ocean.


oceanography British  
/ ˌəʊʃənəˈɡræfɪk, ˌəʊʃɪə-, ˌəʊʃəˈnɒɡrəfɪ, ˌəʊʃɪə- /

noun

  1. the branch of science dealing with the physical, chemical, geological, and biological features of the oceans and ocean basins

"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

oceanography Scientific  
/ ō′shə-nŏgrə-fē /
  1. The scientific study of oceans, the life that inhabits them, and their physical characteristics, including the depth and extent of ocean waters, their movement and chemical makeup, and the topography and composition of the ocean floors. Oceanography also includes ocean exploration.

  2. Also called oceanology


Other Word Forms

Etymology

Origin of oceanography

First recorded in 1855–60; ocean + -o- + -graphy

Explanation

Oceanography is the scientific study of the ocean. If you're interested in biology, physics, and sea creatures, you might want to study oceanography. Another way to say oceanography is "marine science." Scientists who specialize in oceanography are called oceanographers, and they focus on specific aspects of the sea which might include the physics of waves and currents or the biology of marine animals and plants. The word oceanography was coined in the mid-1800s, modeled on geography, from ocean and -graphy, "the process of writing or recording."

Keep Reading on Vocabulary.com

Vocabulary lists containing oceanography

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

An oceanography professor told ABC it may only have been in the water for a few weeks before it landed at Wharton Beach, where it may have remained buried for 100 years.

From BBC Oct. 29, 2025

The data gathered in the program applies to ecology, weather, oceanography, soil science, biology and satellite calibration/validation research.

From Los Angeles Times Jun. 27, 2025

This is "a very clear signature and footprint of a classic Amoc slowdown" says Matthew England, professor of oceanography at the University of South Wales.

From BBC Jan. 31, 2025

"Environmental and human health are inextricably linked," said David Karl, co-author and professor of oceanography at UH Manoa.

From Science Daily Apr. 2, 2024

We have neglected oceanography, saline water conversion, and the basic research that lies at the root of all progress.

From State of the Union Address by Kennedy, John F. (John Fitzgerald)

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