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

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 5 Dec. 2022.

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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