SUBDUCTION

subduction

(noun) a geological process in which one edge of a crustal plate is forced sideways and downward into the mantle below another plate

Source: WordNet® 3.1

Etymology

Noun

subduction (countable and uncountable, plural subductions)

The action of being pushed or drawn beneath another object.

(geology) The process of one tectonic plate moving beneath another and sinking into the mantle at a convergent plate boundary.

The act of subducting or taking away.

Arithmetical subtraction.

(mathematics, analysis) A surjection between diffeological spaces such that the target is identified as the pushforward of the source.

Coordinate terms

• obduction

Source: Wiktionary

Sub*duc"tion, n. Etym: [L. subductio.]

1. The act of subducting or taking away. Bp. Hall.

2. Arithmetical subtraction. Sir M. Hale.

Source: Webster’s Unabridged Dictionary 1913 Edition

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