Definition of f region
English to English noun - the highest region of the ionosphere (from 90 to 600 miles up) which contains the highest concentration of free electrons and is most useful for long-range radio transmission
source: WordNet 3.0
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Nearby Word
f region, foregone, fergon, fourgon, frisson, foreign, foreskin, free zone, foreigner, frozen, furzen, fraxin, fresno, fraken, forechosen, frisian, freshen, frogman, fragment, friesian
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