n.
Pronunciation: ( ˌ )s ə b- ' d ə k-sh ə n
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 )s ə b- ' d ə kt \ verb