Meaning of IONOSPHERE

Pronunciation:			I'ânu`sfeer
WordNet Dictionary
	Definition:		[n]  the outer region of the Earth's atmosphere; contains a high concentration of free electrons
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	See Also:		Appleton layer, atmosphere, D region, D-layer, E layer, E region, F layer, F region, Heaviside layer, Kennelly-Heaviside layer, part, region
Thesaurus Terms
	Related Terms:		aerospace, aerosphere, air hole, air pocket, airspace, Appleton layer, belt, bump, CAT, ceiling, chemosphere, crosswind, empty space, F layer, favorable wind, fog, front, head wind, Heaviside-Kennelly layer, high-pressure area, hole, isothermal region, jetstream, layer, lower atmosphere, low-pressure area, outer atmosphere, overcast, photosphere, pocket, roughness, soup, space, stratosphere, stratum, substratosphere, tail wind, tropopause, troposphere, trough, turbulence, upper atmosphere, Van Allen belt, visibility, visibility zero