[ jee-oh-kuh-roh-nuh ]
/ ˌdʒi oʊ kəˈroʊ nə /


a belt of ionized hydrogen surrounding the earth at the outer limit of the exosphere.

Origin of geocorona

First recorded in 1955–60; geo- + corona
Related formsge·o·co·ro·nal, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Science definitions for geocorona


[ jē′ō-kə-rōnə ]

The halo of far-ultraviolet solar light that reflects off the Earth's exosphere.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.