Meaning of the word ionosphere in English

What does ionosphere mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

ionosphere

US /aɪˈɑː.nəˌsfɪr/
UK /aɪˈɒn.əˌsfɪər/
"ionosphere" picture

Noun

the layer of the earth's atmosphere that contains a high concentration of ions and free electrons and is able to reflect radio waves

Example:
Radio signals can bounce off the ionosphere.
The ionosphere plays a crucial role in long-distance radio communication.