Definition of “the ionosphere” - English Dictionary

“the ionosphere” in British English

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the ionospherenoun [ S ]

uk /aɪˈɒn.əˌsfɪər/ us /aɪˈɑː.nəˌsfɪr/ specialized

the part of the earth's atmosphere, from about 60 kilometres to about 1,000 kilometres above the surface, in which there are many ions

ionospheric
adjective uk /aɪˌɒn.əˈsfer.ɪk/ us /aɪˌɑː.nəˈsfer.ɪk/

(Definition of “the ionosphere” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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