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Rivera Plate

American  
[ri-vair-uh pleyt, ree-ve-rah] / rɪˈvɛər ə ˈpleɪt, riˈḇɛ rɑ /

noun

Geology, Oceanography.

  1. a small tectonic plate just south of the Baja California peninsula off the west coast of Mexico, believed to have separated from the Cocos Plate at least five million years ago.

Etymology

Origin of Rivera Plate

First recorded in 1945–50; named after the Rivera Transform Fault (former name of the Rivera Fracture Zone ) that borders it on the southwest

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.