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[ahy-on-uh-pawz] /aɪˈɒn əˌpɔz/

the transitional zone between the ionosphere and the mesosphere.
the transitional zone in the atmosphere between the ionosphere and the exosphere, about 644 km (400 miles) from the earth’s surface


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  • Ionophore

    [ahy-on-uh-fawr, -fohr] /aɪˈɒn əˌfɔr, -ˌfoʊr/ noun, Biochemistry. 1. a lipid-soluble substance capable of transporting specific ions through cellular membranes. /aɪˈɒnəˌfɔː/ noun 1. a chemical compound capable of forming a complex with an ion and transporting it through a biological membrane ionophore i·on·o·phore (ī-ŏn’ə-fôr) n. Any of a group of organic compounds that form a complex […]

  • Ionophoresis

    ionophoresis i·on·o·pho·re·sis (ī-ŏn’ə-fə-rē’sĭs) n. See electrophoresis. i·on’o·pho·ret’ic (-rět’ĭk) adj.

  • Ionosonde

    [ahy-on-uh-sond] /aɪˈɒn əˌsɒnd/ noun 1. a pulsed radar device used to measure the height of ionospheric layers.

  • Ionosphere

    [ahy-on-uh-sfeer] /aɪˈɒn əˌsfɪər/ noun 1. the region of the earth’s atmosphere between the stratosphere and the exosphere, consisting of several ionized layers and extending from about 50 to 250 miles (80 to 400 km) above the surface of the earth. /aɪˈɒnəˌsfɪə/ noun 1. a region of the earth’s atmosphere, extending from about 60 kilometres to […]

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