Crossword Genius

Unit of frequency (5)

Ross

I believe the answer is:

hertz

'unit of frequency' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for hertz that I've seen before include "Cycles per second unit" , "A measure of frequency" , "Unit of frequency - German physicist, d. 1894" .)

I've seen this clue in The Independent, The Sun, The Guardian and The Telegraph.
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