Main Entry: sub·duc·tion

Pronunciation: \(ˌ)səb-ˈdək-shən\

Function: noun

Etymology: French, from Late Latin subduction-, subductio withdrawal, from Latin subducere to withdraw, from sub- + ducere to draw — more at tow

Date: 1970

: 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