geocorona

[ jee-oh-kuh-roh-nuh ]

noun

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

geocorona

/ jē′ō-kə-rō′nə /

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

Other Words From

• geo·co·ronal adjective

Word History and Origins

Origin of geocorona¹

First recorded in 1955–60; geo- + corona