Definition of subduction
: the action or process in plate tectonics of the edge of one crustal plate descending below the edge of another
subductplay \(ˌ)səb-ˈdəkt\ verb
Origin and Etymology of subduction
French, from Late Latin subduction-, subductio withdrawal, from Latin subducere to withdraw, from sub- + ducere to draw — more at tow
First Known Use: 1970
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