noun🔗ShareExpansión del fondo marinoThe outward movement of the seafloor from central underwater ridges as a result of plate tectonics; the major cause of continental drift."Scientists study seafloor spreading to understand how continents move over millions of years. "Los científicos estudian la expansión del fondo marino para comprender cómo se mueven los continentes a lo largo de millones de años.geologygeographyoceanenvironmentnaturescienceChat with AIVocabulary GamePractice Reading