Question

Classify the following definition according to its use: to reduce vagueness, to introduce or explain a new or unusual word, to evoke an attitude about something, or to accomplish some other purpose.

"Subduction zone: In interpretations of plate tectonic theory, a belt along the under-margin of a continental plate, where the colliding oceanic plate descends toward or into the mantle."Robert M. Norris and Robert W. Webb, Geology of California

Answer

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