East Pacific Rise

[ eest puh-sif-ik rahyz ]

noun

1. a long north-south elevation of the seafloor in the eastern Pacific Ocean extending southward from southwestern Mexico to the Southern Ocean, separating the Pacific Plate from the North American, Rivera, Cocos, Nazca, and Antarctic Plates. : EPR

Word History and Origins

Origin of East Pacific Rise¹

First recorded in 1960–65