a process of pulling something down; esp.,
- the muscular action needed to aim an eye downward
- Geol. the sinking of one crustal plate under another as they collide
A geologic process in which one edge of one crustal plate is forced below the edge of another.
Origin of subductionFrench, from Latin subductus, past participle of subdūcere, to draw away from below : sub-, sub- + dūcere, to lead; see deuk- in Indo-European roots.