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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
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 6 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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