Dictionary.com
Thesaurus.com

geocorona

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

noun

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

geocorona Scientific  
/ jē′ō-kə-rō′nə /

  1. The halo of far-ultraviolet solar light that reflects off the Earth's exosphere.

Other Word Forms

  • geocoronal adjective

Etymology

Origin of geocorona

First recorded in 1955–60; geo- + corona

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Carruthers also built a camera that, in 1972, was operated on the Moon by Apollo 16 astronauts, taking the first UV images of Earth’s geocorona.

From Science Magazine • Dec. 7, 2022

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.