subduction

noun sub·duc·tion \(ˌ)səb-ˈdək-shən\

Definition of SUBDUCTION

: the action or process in plate tectonics of the edge of one crustal plate descending below the edge of another

— sub·duct \(ˌ)səb-ˈdəkt\ verb

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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