See Also: ionosphere(medicine)
ionosphere(dictionary)
ionosphere(encyclopedia)
ionosphere(dictionary)

ionosphere (iou)



ionosphere noun. E20.
[from ION + -O- + -SPHERE.]
A region of the outer atmosphere, upwards of 50-80 km (30-50 miles), which contains many ions and free electrons and is able to reflect radio waves, allowing long-range transmission; also, a corresponding region above the surfaces of other planets.
ionospheric adjective of, pertaining to, or involving the ionosphere M20.
iono'spherically adverb by the ionosphere M20.
iono'sphericist noun (rare) = ionospherist L20.
iono'spherist noun (rare) a person who studies the ionosphere M20.