Seaquake

ahd-5
  • noun. An earthquake originating under the sea floor.
    • The Century Dictionary and Cyclopedia
  • noun. An earthquake which takes place beneath the ocean.
    • the GNU version of the Collaborative International Dictionary of English
  • noun. A quaking of the sea.
    • Wiktionary, Creative Commons Attribution/Share-Alike License
  • noun. An earthquake whose epicentre is beneath the sea
    • WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
  • noun. an earthquake at the sea bed
    • Word Usage
    "No one seemed to think for a moment of danger, or took heed of the bustle on deck, or of the quivering and shaking of everything in the saloon, which seemed suffering from what Mr Lathrope styled a "seaquake" -- in contradistinction to earthquake."
    Hypernym
    Words that are more generic or abstract
    earthquake  quake  seism  temblor  
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