mid-ocean ridge

noun
\ˈmid-ˈō-shən- \

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

Examples of mid-ocean ridge in a Sentence

Recent Examples on the Web

That could make more sense if mid-ocean ridge eruptions were pumping out extra CO2. Scott K. Johnson, Ars Technica, "End-Cretaceous asteroid impact seems to have juiced seafloor volcanoes," 8 Feb. 2018 There are submarine volcanoes, along Earth's mid-ocean ridges, that have been erupting longer. Doyle Rice, USA TODAY, "Hawaii volcano: The science behind the eruption of Kilauea," 7 May 2018 The mid-ocean ridges and dinosaurs continue their normal activity. Smithsonian, "The Meteorite That Killed the Dinosaurs May Have Also Triggered Underwater Volcanoes," 8 Feb. 2018 The mid-ocean ridges on the seafloor, however, keep records. Scott K. Johnson, Ars Technica, "End-Cretaceous asteroid impact seems to have juiced seafloor volcanoes," 8 Feb. 2018 The mid-ocean ridges erupt large volumes of magma, while the Deccan Traps eruptions flood lava across much of the Indian subcontinent. Smithsonian, "The Meteorite That Killed the Dinosaurs May Have Also Triggered Underwater Volcanoes," 8 Feb. 2018 However, this is only true for the faster-spreading mid-ocean ridges of the Pacific and Indian Oceans. Scott K. Johnson, Ars Technica, "End-Cretaceous asteroid impact seems to have juiced seafloor volcanoes," 8 Feb. 2018 This phenomenon may have resulted from repeating pulses of volcanism along mid-ocean ridges, which previous research has linked to cycles of ice ages and warming. Terri Cook, Scientific American, "Hunt for Flight MH370 Takes Searchers into Uncharted Territory," 1 July 2017 This new magma percolates its way to the surface and fuels nearly continuous volcanic activity along what are known as mid-ocean ridges. Smithsonian, "The Meteorite That Killed the Dinosaurs May Have Also Triggered Underwater Volcanoes," 8 Feb. 2018

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.

See More

First Known Use of mid-ocean ridge

1961, in the meaning defined above

Keep scrolling for more

Learn More about mid-ocean ridge

Share mid-ocean ridge

Dictionary Entries near mid-ocean ridge

midnight oil

midnight sun

midnoon

mid-ocean ridge

mid off

mid on

midpalatal

Statistics for mid-ocean ridge

Look-up Popularity

Time Traveler for mid-ocean ridge

The first known use of mid-ocean ridge was in 1961

See more words from the same year

More from Merriam-Webster on mid-ocean ridge

Rhyming Dictionary: Words that rhyme with mid-ocean ridge

Comments on mid-ocean ridge

What made you want to look up mid-ocean ridge? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

amusing and light sparring with words

Get Word of the Day daily email!

Test Your Vocabulary

Late Autumn 2018 Words of the Day Quiz

  • frosted-autumn-leaves
  • Which is a synonym of yahoo?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!