# hertz
## English
### Etymology

Named after German physicist Heinrich Rudolf Hertz (1857–1894).

### Pronunciation

* (UK) IPA: /hɜːts/, /hɜːs/
* (US) IPA: /hɝts/
** Audio (US):(file)
* Homophone: hurts
* Rhymes: -ɜː(ɹ)ts

### Noun

hertz (plural hertz or hertzes)
* In the International System of Units, the derived unit of frequency; one (period or cycle of any periodic event) per second. Symbol: Hz
    Synonym: cycle per second
** 2017 December 12, National Transportation Safety Board, “1.3.5 Electrical Generation and Distribution System”, in Marine Accident Report: Sinking of US Cargo Vessel SS El Faro, Atlantic Ocean, Northeast of Acklins and Crooked Island, Bahamas, October 1, 2015‎, archived from the original on 15 May 2022, pages 36–37:Each turbogenerator consisted of a steam turbine, powered by 900 psi of superheated steam, that was coupled by a set of reduction gears to a General Electric marine alternating-current generator operating at 1,800 rpm. Each generator had a capacity of 2,000 kilowatts of three-phase power at 450 volts and 60 hertz. The main 450-volt switchboard was energized by the two turbogenerators. The emergency switchboard, in the emergency generator room, was fed from the main switchboard through an electrical tie.

#### See also

* hertz on Wikipedia.Wikipedia

## Czech
### Pronunciation

* IPA: [ˈɦɛrt͡s]

### Noun

hertz m inan
* hertz (unit of frequency)

#### Declension
### Further reading

* “hertz”, in Příruční slovník jazyka českého (in Czech), 1935–1957
* “hertz”, in Slovník spisovného jazyka českého (in Czech), 1960–1971, 1989

## Danish
### Etymology

Named after the German physicist Heinrich Rudolf Hertz.

### Pronunciation

* IPA: /hɛrts/, [hæɐ̯d̥s]

### Noun

hertz c (plural indefinite hertz)
* hertz. Symbol: Hz

#### Derived terms

* kilohertz
* megahertz

#### Further reading

* hertz on the Danish Wikipedia.Wikipedia $^{da}$

## French
### Pronunciation

* IPA: /ɛʁts/
* Audio (Paris):(file)
* Rhymes: -ɛʁts

### Noun

hertz m (plural hertz)
* hertz

#### Related terms

* hertzien

### Further reading

* “hertz”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

## Galician
### Noun

hertz m (uncountable)
* hertz
    Synonym: hercio

## Italian
### Pronunciation

* IPA: /ˈɛrt͡s/$^*$
* Rhymes: -ɛrts
* Hyphenation: hèrtz

### Noun

hertz m (invariable)
* (metrology, physics) hertz

#### Related terms

* hertziano

### Further reading

* hertz in Luciano Canepari, Dizionario di Pronuncia Italiana (DiPI)
* Hertz in Aldo Gabrielli, Grandi Dizionario Italiano (Hoepli)
* hertz in garzantilinguistica.it – Garzanti Linguistica, De Agostini Scuola Spa
* hèrtz in Dizionario Italiano Olivetti, Olivetti Media Communication
* hertz in sapere.it – De Agostini Editore
* hertz in Treccani.it – Vocabolario Treccani on line, Istituto dell'Enciclopedia Italiana

## Norwegian Nynorsk
### Etymology

Named after German physicist Heinrich Rufolf Hertz.

### Noun

hertz m (definite singular hertzen, indefinite plural hertz, definite plural hertzane)
* hertz (unit of frequency)

### References

* “hertz” in The Nynorsk Dictionary.

## Portuguese
### Etymology

Borrowed from German Hertz.

### Pronunciation

* (Brazil) IPA: /ˈʁɛʁts/ [ˈhɛhts], /ˈʁɛʁ.t͡ʃis/ [ˈhɛh.t͡ʃis]
* (Brazil) IPA: /ˈʁɛʁts/ [ˈhɛhts], /ˈʁɛʁ.t͡ʃis/ [ˈhɛh.t͡ʃis]
** (São Paulo) IPA: /ˈʁɛɾts/ [ˈhɛɾts], /ˈʁɛɾ.t͡ʃis/ [ˈhɛɾ.t͡ʃis]
** (Rio de Janeiro) IPA: /ˈʁɛʁt͡ʃ/ [ˈχɛχt͡ʃ], /ˈʁɛʁ.t͡ʃiʃ/ [ˈχɛχ.t͡ʃiʃ]
** (Southern Brazil) IPA: /ˈʁɛɻts/ [ˈhɛɻts], /ˈʁɛɻ.tes/ [ˈhɛɻ.tes]
* (Portugal) IPA: /ˈɛɾt͡ʃ/

### Noun

hertz m (invariable)
* hertz (unit of frequency)

## Romanian
### Etymology

Borrowed from German Hertz or French hertz.

### Noun

hertz m (plural hertzi)
* hertz

#### Declension
## Spanish
### Etymology

Unadapted borrowing from English hertz.

### Noun

hertz m (plural hertz)
* hertz
    Synonym: hercio

#### Usage notes

According to Royal Spanish Academy (RAE) prescriptions, unadapted foreign words should be written in italics in a text printed in roman type, and vice versa, and in quotation marks in a manuscript text or when italics are not available. In practice, this RAE prescription is not always followed.

### Further reading

* “hertz”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 2024 December 10

## Swedish
### Etymology

Named after German physicist Heinrich Hertz.

### Pronunciation

* (broad) IPA: /hærts/
* (retroflex dialects) IPA: [hæʈʂ], [hɛʈʂ]

### Noun

hertz c
* hertz (singular and plural)