Crater

The word crater may refer to

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• A landform resembling a pit or depression in the topography that can be formed in several ways:
• a meteorite impact with another body can cause an impact crater,
• an electrical discharge such as lightning may form a crater-like pit,
• volcanic activity may form a volcanic crater or caldera,
• erosion may form a depression called a karst,
• a mine explosion or a bomb may form a crater.
• an underground explosion (usually nuclear) can form a subsidence crater
• A constellation, see Crater (constellation).
• A Greek vessel used to mix wine and water (the original meaning): see Krater.