E region

noun

Definition of E region

: 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

First Known Use of e region

1930

in the meaning defined above

See Words from the same year
NEW! Time Traveler

Seen and Heard

What made you want to look up E region? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!