seafloor spreading

noun

a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out.

Origin of seafloor spreading

First recorded in 1960–65

Words nearby seafloor spreading

sea feather, sea fight, sea fir, sea fire, seafloor, seafloor spreading, sea foam, seafood, Seaford, seafowl, sea fox

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for seafloor spreading

sea-floor spreading

/ (ˈsiːˌflɔː) /

noun

a series of processes in which new oceanic lithosphere is created at oceanic ridges, spreads away from the ridges, and returns to the earth's interior along subduction zonesAlso called: ocean floor spreading

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Cultural definitions for seafloor spreading

sea floor spreading

The process by which new material that lies under the ocean rises and pushes the existing tectonic plates aside, creating new crust as it does so.

notes for sea floor spreading

Sea floor spreading is making the Atlantic Ocean wider by a few inches each year.

Scientific definitions for seafloor spreading

sea-floor spreading

In the theory of plate tectonics, the process by which new oceanic crust is formed by the convective upwelling of magma at mid-ocean ridges, resulting in the continuous lateral displacement of existing oceanic crust. See more at magnetic reversal.

单词	seafloor spreading
释义	seafloor spreading noun a process in which new ocean floor is created as molten material from the earth's mantle rises in margins between plates or ridges and spreads out. Origin of seafloor spreading First recorded in 1960–65 Words nearby seafloor spreading sea feather, sea fight, sea fir, sea fire, seafloor, seafloor spreading, sea foam, seafood, Seaford, seafowl, sea fox Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for seafloor spreading sea-floor spreading / (ˈsiːˌflɔː) / noun a series of processes in which new oceanic lithosphere is created at oceanic ridges, spreads away from the ridges, and returns to the earth's interior along subduction zonesAlso called: ocean floor spreading Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Cultural definitions for seafloor spreading sea floor spreading The process by which new material that lies under the ocean rises and pushes the existing tectonic plates aside, creating new crust as it does so. notes for sea floor spreading Sea floor spreading is making the Atlantic Ocean wider by a few inches each year. The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Scientific definitions for seafloor spreading sea-floor spreading In the theory of plate tectonics, the process by which new oceanic crust is formed by the convective upwelling of magma at mid-ocean ridges, resulting in the continuous lateral displacement of existing oceanic crust. See more at magnetic reversal. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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