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ionosphere

i·on·o·sphere

ionosphere

 
pronunciation:
aI a n sfir
features:
Word Combinations (noun), Word Parts
part of speech: noun
definition: layers of the earth's atmosphere located above the stratosphere from about thirty to two hundred and fifty miles above the earth's surface, and composed of rarefied gases that have been ionized by radiation from the sun.
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derivation: ionospheric (adj.)
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