mid-o·cean ridge (m d sh n). n. A series of mountain ranges on the ocean floor, more than 84,000 kilometers (52,000 miles) in length, extending through the ... www.thefreedictionary.com |
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 ... www.merriam-webster.com |
mid-ocean ridge definition: A long mountain range on the ocean floor, extending almost continuously through the North and South Atlantic Oceans, the Indian ... science.yourdictionary.com |