superhigh frequency

noun
su·​per·​high frequency | \ ˈsü-pər-ˌhī- How to pronounce superhigh frequency (audio) \

Definition of superhigh frequency

: a radio frequency in the next to the highest range of the radio spectrum — see Radio Frequencies Table

First Known Use of superhigh frequency

1945, in the meaning defined above

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The first known use of superhigh frequency was in 1945

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