noun
- A region of the ionosphere (from 50 to 90 miles up) that reflects radio waves of medium length.
- synonyms: Heaviside layer, Kennelly-Heaviside layer, E layer
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). E region. Retrieved September 23, 2026, from http://smartdefine.org/e_region/definitions/1271867 |
| Chicago | WordNet. 2010. "E region" http://smartdefine.org/e_region/definitions/1271867 (accessed September 23, 2026). |
| Harvard | WordNet 2010, E region, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/e_region/definitions/1271867>. |
| MLA | WordNet. "E region" 23 October 2010. Web. 23 September 2026. <http://smartdefine.org/e_region/definitions/1271867> |