e layer elavil • elb · · · Info · Definitions · Characters · · e layer · · Text Common · · Latin · · Scripts 7 · · Length 3 · · Syllables Definitions · · · (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, E region. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 l latin small letter l U+006C r latin small letter r U+0072 y latin small letter y U+0079