F layer

noun

Definition of F layer 

: the highest and most densely ionized regular layer of the ionosphere occurring at night within the F region

First Known Use of F layer

1928, in the meaning defined above

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Dictionary Entries near F layer

flax wheel

flax wilt

flay

F layer

flayflint

fld

fl dr

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The first known use of F layer was in 1928

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