volcanic crater

Definitions of volcanic crater
  1. noun
    a bowl-shaped geological formation at the top of a volcano
    synonyms: crater
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    types:
    caldera
    a large crater caused by the violent explosion of a volcano that collapses into a depression
    maar
    a flat-bottomed volcanic crater that was formed by an explosion; often filled with water
    type of:
    formation, geological formation
    (geology) the geological features of the earth
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