E layer

noun

: a layer of the ionosphere occurring about 65 miles (110 kilometers) above the earth's surface during daylight hours that is capable of reflecting shortwave frequencies

Examples of E layer in a Sentence

Recent Examples on the Web The team’s radar detectors were designed to measure the waves bouncing off the ionosphere’s E layer, a region 100 kilometers up. Byjonathan O’Callaghan, science.org, 12 May 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'E layer.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1933, in the meaning defined above

Time Traveler
The first known use of E layer was in 1933

Dictionary Entries Near E layer

Cite this Entry

“E layer.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/E%20layer. Accessed 17 Jun. 2024.

Kids Definition

E layer

noun
: a layer of the ionosphere that occurs at about 65 miles (110 kilometers) above the earth's surface during daylight hours and is capable of reflecting radio waves
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