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English Dictionary
▪ e▪ e layer▪ e region▪ e'en▪ e'er
◊ e region
E region
n : a region of the ionosphere (from 50 to 90 miles up) that
reflects radio waves of medium length [syn: {Heaviside
layer}, {Kennelly-Heaviside layer}, {E layer}, {E region}]