mid-ocean ridge

noun \ ˈmid-ˈō-shən- \
|Updated on: 10 Jun 2018

Definition of mid-ocean ridge

: an elevated region with a central valley on an ocean floor at the boundary between two diverging tectonic plates where new crust forms from upwelling magma

Recent Examples of mid-ocean ridge from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mid-ocean ridge.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of mid-ocean ridge

1961

in the meaning defined above

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