subduction

Meanings

1. The action of being pushed or drawn beneath another object.
2. The process of one tectonic plate moving beneath another and sinking into the mantle at a convergent plate boundary.
3. The act of subducting or taking away.
4. Arithmetical subtraction.
5. A surjection between diffeological spaces such that the target is identified as the pushforward of the source.

Etymology

From Latin subductiō, from subdūcere (“to draw from under or below”). Equivalent to subduct + -ion or subduce + -tion.