Crossword Genius

One cycle per second

Ross

I believe the answer is:

hertz

'one cycle per second' is the definition.
(synonyms)

This is all the clue.

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

I've seen this clue in The New York Times.
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