Definition of contravallation
: a series of works confronting the walls of an invested place to isolate the defenders and safeguard the besiegers against sallies; also : construction of such works
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Origin and Etymology of contravallation
modification (influenced by Latin contra-) of French contrevallation, from contre- (from Latin contra-) + Late Latin vallation-, vallatio rampart, entrenchment — more at vallation
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