Protected or bordered by a dike or dikes; surrounded or controlled by embankments for water management.
Past tense and past participle of 'dike' (to build or construct a dike), derived from Middle Dutch 'dijken.' The '-ed' suffix marks it as an adjective describing something that has undergone the action of building dikes.
You can walk through the Netherlands today and see vast regions that are literally 'dyked'—shaped entirely by human engineering to create habitable land below sea level. Dutch landscape has been so thoroughly dyked that calling someone 'Dutch' once meant calling them clever engineers!
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