E region

noun

the region of the ionosphere in which the E layer forms.

Origin of E region

First recorded in 1935–40

British Dictionary definitions for e region

E region

E layer

noun

a region of the ionosphere, extending from a height of 90 to about 150 kilometres. It reflects radio waves of medium wavelength Also called: Heaviside layer, Kennelly-Heaviside layer See also ionosphere

Scientific definitions for e region

E region

The region of the ionosphere that lies approximately 90 to 150 km (56 to 93 mi) above the Earth's surface. This region may affect long-distance communications because it influences radio waves in the 1-3 megahertz range. Also called E layer Heaviside layer Compare D region F region.