from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An underwater mountain rising from the ocean floor and having a peaked or flat-topped summit below the surface of the sea.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A mountain that rises from the floor of the ocean and does not breach the water's surface.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun an underwater mountain rising above the ocean floor


Sorry, no etymologies found.


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  • One of the highlights of the 2009 mission was the August 25 discovery of an underwater mountain, known as a seamount, by scientists aboard the Healy.

    Media Newswire 2009

  • The island group represents the exposed peaks of a large volcanic seamount which is about 65 km long and 24 km wide and which rises from ocean depths of over 1,800 m.

    Lord Howe Island Group, Australia 2008

  • 'seamount', residing 120 km off the central California coast in approximately 3600 m of water

    ScienceBlogs Channel : Life Science 2009

  • If this event did turn out to be a seamount, Reggie would get the credit for discovering it.

    Rogue Wave Boyd Morrison 2010

  • Maybe the seamount has been building for a while and now a major eruption triggered a landslide down the face of it.

    Rogue Wave Boyd Morrison 2010

  • CenSeam will: coordinate existing and planned programs for maximum benefit through encouraging community networking catalyze new seamount sampling activities offer mini-grants to expand the scope of surveys/data collection/analysis align research approaches and data collection ensure that opportunities for collaboration between programs are maximized integrate and analyze incoming information to create new knowledge consolidate and synthesize existing data, e.g., historical data that to date has been functionally inaccessible to the scientific community

    Contributor: CenSeam: a Global Census of Marine Life on Seamounts 2010

  • Through the Census of Marine life we invite you to be a part of our research, join in our surveys, have a look at the creatures that we find and learn how to play a role in seamount conservation.

    Contributor: CenSeam: a Global Census of Marine Life on Seamounts 2010

  • A new seamount was a rare phenomenon, essentially the birth of a new island.

    Rogue Wave Boyd Morrison 2010

  • Eventually, the seamount sinks below the sea surface, while the coral reef continues to grow upward resulting in the characteristic donut-shaped reef enclosing a central lagoon.

    Coral reef 2010

  • Atolls begin by colonizing a seamount or volcano, and then grow upward as the seamount sinks and/or as sea level rises.

    Coral reef 2010


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