ionosphere
noun
ion·o·sphere
ī-ˈä-nə-ˌsfir 
: the part of the earth's atmosphere in which ionization of atmospheric gases affects the propagation of radio waves, which extends from about 30 miles (50 kilometers) to the exosphere, and which is contiguous with the upper portion of the mesosphere and the thermosphere
also
: a comparable region of charged particles surrounding another celestial body (such as Venus)
Examples of ionosphere in a Sentence
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The researchers suggest that these white lights arise due to a combination of heating in the ionosphere due to the surrounding aurora, as well as the chemiluminescence of some other gases in the atmosphere, possibly nitrogen dioxide.
—
Yaakov Katz, Newsweek, 13 Jan. 2025
However, even though these reactions were confirmed to create various ions, such O+, O2+, and CO2+ in the Martian ionosphere, there is still no evidence to say O2 is formed this way.
—Victoria Corless, Space.com, 2 Jan. 2025
There are other, less immediate benefits from the Android ionosphere maps as well.
—Mack Degeurin, Popular Science, 13 Nov. 2024
Red auroras hit at the ionosphere, around 150 miles high.
—Stephanie Vermillion, Outside Online, 21 Nov. 2024
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Yaakov Katz, Newsweek, 13 Jan. 2025
However, even though these reactions were confirmed to create various ions, such O+, O2+, and CO2+ in the Martian ionosphere, there is still no evidence to say O2 is formed this way.
—Victoria Corless, Space.com, 2 Jan. 2025
There are other, less immediate benefits from the Android ionosphere maps as well.
—Mack Degeurin, Popular Science, 13 Nov. 2024
Red auroras hit at the ionosphere, around 150 miles high.
—Stephanie Vermillion, Outside Online, 21 Nov. 2024
See all Example Sentences for ionosphere
Dictionary Entries Near ionosphere
Cite this Entry
“Ionosphere.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ionosphere. Accessed 18 Jan. 2025.
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ionosphere
noun
ion·o·sphere
ī-ˈän-ə-ˌsfi(ə)r
: the part of the earth's atmosphere beginning at an altitude of about 30 miles (50 kilometers) and extending outward that contains free electrically charged particles
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