Ionosphere Definition
ī-ŏnə-sfîr
noun
The outer part of the earth's atmosphere, beginning at an altitude of c. 55 km (c. 34 mi) and extending to the highest parts of the atmosphere: it contains several regions that consist of a series of constantly changing layers characterized by an appreciable electron and ion content.
Webster's New World
The similar region of the atmosphere of another planet.
Wiktionary
Other Word Forms of Ionosphere
Noun
Singular:
ionosphere
Plural:
ionospheresOrigin of Ionosphere
iono- + -sphere
From Wiktionary
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