E region
noun Date: 1930 the part of the ionosphere occurring between about 55 and 80 miles (90 and 130 kilometers) above the surface of the earth and containing the daytime E layer and the sporadic E layer

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • E region — n. the atmospheric zone within the ionosphere at an altitude of c. 90 to 140 km ( c. 56 to 90 mi), containing the E layer …   English World dictionary

  • E region — noun 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 • Instance Hypernyms: ↑region, ↑part • Part Holonyms: ↑ …   Useful english dictionary

  • E region — the region of the ionosphere in which the E layer forms. [1935 40] * * * ▪ atmospheric science also called  Kennelly heaviside Layer,         ionospheric region that extends from an altitude of 90 kilometres (60 miles) to about 160 kilometres… …   Universalium

  • E-region — var. of E LAYER. * * * E layer or E region see ↑Kennelly Heaviside layer • • • Main Entry: ↑E …   Useful english dictionary

  • E region — The region of the ionosphere in which the E layer tends to form. The region lies between 60 and 90 miles (100–150 km). The region reflects electromagnetic energy from 100 kHz to 30 MHz and plays an important role in long distance radio… …   Aviation dictionary

  • E-region — noun another term for E layer …   English new terms dictionary

  • I\/E region — Abbreviation for integration excision region …   Glossary of Biotechnology

  • Région E ou couche E — ● Région E ou couche E région de l ionosphère terrestre, située entre 90 et 120 à 140 km d altitude …   Encyclopédie Universelle

  • E layer — n. a dense layer of ions in the E region of the ionosphere at an altitude of c. 100 km ( c. 62 mi), capable of reflecting shortwave radio waves …   English World dictionary

  • e — 1. e [ ø ] n. m. inv. ♦ Cinquième lettre et deuxième voyelle de l alphabet : e majuscule (E), e minuscule (e), e accent aigu (é), e accent grave (è), e accent circonflexe (ê), e tréma (ë) (Noël, aiguë). Le e muet marque souvent le féminin à l… …   Encyclopédie Universelle

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