Hz is the International Standard symbol for hertz, a unit of frequency.
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Within Vinony's link graph, HZ is referenced by 2 other articles, and connects out to Saudi Arabia, hertz and herpes zoster.
Its subject is documented across 18 Wikipedia language editions.
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Encyclopedic overview
Hz is the International Standard symbol for hertz, a unit of frequency.
Hz. may also stand for: Hazrat, an honorific Arabic and Turkish title used to honour a person, used especially for prophets, e.g. Hz. Muhammad, Hz. Ibrahim, etc.
Excerpted from Wikipedia’s “HZ” article, available under the CC BY-SA 4.0 licence.