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Word of the Day Tuesday, June 9, 2026

ionosphere

/ˌaɪ.əˈnɒsfɪər/ noun · British & US
Valid in UKValid in US
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What does ionosphere mean?

noun

The region of the Earth's atmosphere that extends from about 50 to 600 kilometers above the surface, characterized by a high concentration of ions and free electrons.

Example

"The ionosphere plays a crucial role in radio communication, as it can reflect and refract radio waves."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for ionosphere

Antonyms of ionosphere

Rhymes with ionosphere

Etymologically related