plate tectonics(redirected from Tectonic motion)
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Related to Tectonic motion: plate tectonics
plate tectonicsthe study of the movement of the large crustal plates that form the surface of the earth on the continental land masses and beneath the seas. see CONTINENTAL DRIFT.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005