ionosphere (HyperDic hyper-dictionary)

English > 1 sense of the word *ionosphere*:
NOUN	location	ionosphere	the outer region of the Earth's atmosphere

ionosphere > pronunciation
Sounds	ayaa'nahsfiyr; ayyaa'nahsfiyr
Rhymes	bier ... weir: 21 rhymes with iyr...

English > *ionosphere*: 1 sense > noun 1, location
Meaning	The outer region of the Earth's atmosphere; contains a high concentration of free electrons.
Part of	atmosphere, air	The mass of air surrounding the Earth
Parts	Appleton layer, F layer, F region	The highest region of the ionosphere (from 90 to 600 miles up) which contains the highest concentration of free electrons and is most useful for long-range radio transmission
	D-layer, D region	The lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio waves
	Heaviside layer, Kennelly-Heaviside layer, E layer, E region	A region of the ionosphere (from 50 to 90 miles up) that reflects radio waves of medium length
Broader	region, part	The extended spatial location of something
Spanish	ionosfera, Ionósfera
Catalan	ionosfera

HyperDic: ionosphere