E region

American  

noun

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

---

E region British  

noun

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

---

E region Scientific  

1. 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.

2. Also called E layer Heaviside layer

3. Compare D region F region

---

Etymology

Origin of E region

First recorded in 1935–40

Example Sentences

Fonacon's initial effort in 2005 drew 300 people to a small village in the coastal Vend�e region, using what has become the group's winning formula: free oysters and drinks for all comers who preregister, and an evening of tearing up agendas, smashing clocks and otherwise attacking symbols of time.

From Time Magazine Archive

The scion of a posh family whose blueblood ancestors once lorded over parts of his native Vend�e region in western France, the chateau-owning de Villiers initially attracted more pragmatic royalists and upper-class rightists than he did hardened reactionies.

From Time Magazine Archive

On the 14th the Germans were again engaged in serious operations in the La Bass�e region, where they exploded seven mines on the British front.

From Project Gutenberg

Activities along the extended front in the Champagne district having proved successful for the German forces to a considerable extent, the General Staff turned its attention now to the La Bass�e region.

From Project Gutenberg