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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

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.