Definitions from WordNet (Appleton layer)
▸ noun: the highest region of the ionosphere (from 90 to 600 miles up) that contains the highest concentration of free electrons and is most useful for long-range radio transmission
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▸ Usage examples for appleton layer
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▸ noun: the highest region of the ionosphere (from 90 to 600 miles up) that contains the highest concentration of free electrons and is most useful for long-range radio transmission
▸ Words similar to appleton layer
▸ Usage examples for appleton layer
▸ Idioms related to appleton layer
▸ Wikipedia articles (New!)
▸ Words that often appear near appleton layer
▸ Rhymes of appleton layer
▸ Invented words related to appleton layer