Definition of seamount in US English:



  • A submarine mountain.

    • ‘These deep water whales are usually found in the vicinity of seamounts and continental slopes in temperate and subarctic waters.’
    • ‘Since the Early Miocene, thermal decay has led to the subsidence of Cavalli Seamount and other, volcanic, seamounts in the South Fiji Basin.’
    • ‘He took advantage of the opportunity to record echo-sounding profiles across parts of the Pacific and discovered several flat-topped submarine mountains or seamounts.’
    • ‘As the seamount sinks or its peak erodes, the seamount will disappear beneath the water leaving the coral ring.’
    • ‘This process of volcano growth and death, over many millions of years, has left a long trail of volcanic islands and seamounts across the Pacific Ocean floor.’