seafloor spreading (English, noun)
expansion: seafloor spreading (usually uncountable, plural seafloor spreadings)
Senses:
topics: geography
geology
natural-sciences
glosses: The outward movement of the seafloor from central underwater ridges as a result of plate tectonics; the major cause of continental drift.
tags: uncountable
usually
Forms:
form: seafloor spreadings
tags: plural
form: sea-floor spreading
tags: alternative