# pulsar
## English
### Etymology

Blend of pulsating +‎ (radio) star, patterned after quasar. Coined by British astronomers Antony Hewish and Jocelyn Bell in 1968, and first used in print in The Daily Telegraph. Analyzable as pulse +‎ -ar

### Pronunciation

* Audio (US):(file)

### Noun

pulsar (plural pulsars)
* (astronomy) A rotating neutron star that emits radio pulses periodically.
** 2023 August 30, Ashley Strickland, “Astronomers solve the puzzle of an unusual pulsing dead star”, in CNN‎:Rapidly rotating dead stars, pulsars are so named because as they spin, they release beams of electromagnetic radiation across space that appear to pulse like celestial lighthouses. But a pulsar called PSR J1023+0038, located about 4,500 light-years away from Earth in the Sextans constellation, is even more unusual in that some of the pulses are brighter than others, almost like it’s switching between different modes.

#### Synonyms

* PSR (abbreviation)

#### Hypernyms

* neutron star
* star
* variable star

#### Hyponyms

* accretion-powered pulsar
* gamma pulsar
* magnetar
* millisecond pulsar
* optical pulsar
* rotation-powered pulsar
* RRAT (rotating radio transient)
* SGR (soft-gamma repeater)

#### Derived terms

* accretion-powered pulsar
* binary pulsar
* double pulsar
* gamma pulsar
* millisecond pulsar
* optical pulsar
* PSR (abbreviation)
* pulsar clock
* rotation-powered pulsar

#### See also

* astronomical object
* astrophysical object
* astrophysical source
* celestial object
* heavenly body

### Further reading

* pulsar on Wikipedia.Wikipedia
* “pulsar”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
* “pulsar”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.

## Dutch
### Etymology

Borrowed from English pulsar.

### Pronunciation

* Audio:(file)

### Noun

pulsar c (plural pulsars)
* (astronomy) pulsar

## French
### Etymology

Borrowed from English pulsar.

### Pronunciation

* Audio:(file)
IPA: /pyl.saʁ/

### Noun

pulsar f (plural pulsars)
* (astronomy) pulsar

## Ido
### Etymology

From Esperanto pulsi, from English pulsate, German pulsieren, Spanish pulsar, Portuguese pulsar, ultimately from Latin pulsō, frequentative of pellō (“drive, strike”).

### Verb

pulsar (present tense pulsas, past tense pulsis, future tense pulsos, imperative pulsez, conditional pulsus)
* (transitive) to push, thrust, impel
* (intransitive) to beat, throb, pulsate

#### Conjugation
## Norwegian Bokmål
### Etymology

Borrowed from English pulsar.

### Noun

pulsar m (definite singular pulsaren, indefinite plural pulsarer, definite plural pulsarene)
* (astronomy) a pulsar

### References

* “pulsar” in The Bokmål Dictionary.

## Norwegian Nynorsk
### Etymology 1

Borrowed from English pulsar.

#### Noun

pulsar m (definite singular pulsaren, indefinite plural pulsarar, definite plural pulsarane)
* (astronomy) a pulsar

### Etymology 2
#### Noun

pulsar m
* indefinite plural of puls

### References

* “pulsar” in The Nynorsk Dictionary.

## Polish
### Etymology

Borrowed from English pulsar.

### Pronunciation

* IPA: /ˈpul.sar/
* Audio:(file)
* Rhymes: -ulsar
* Syllabification: pul‧sar

### Noun

pulsar m inan
* (astronomy) pulsar (rotating neutron star that emits radio pulses periodically)

#### Declension
### Further reading

* pulsar in Polish dictionaries at PWN
* pulsary in PWN's encyclopedia

## Portuguese
### Pronunciation

* (Brazil) IPA: /puwˈsa(ʁ)/ [puʊ̯ˈsa(h)]
* (Brazil) IPA: /puwˈsa(ʁ)/ [puʊ̯ˈsa(h)]
** (São Paulo) IPA: /puwˈsa(ɾ)/ [puʊ̯ˈsa(ɾ)]
** (Rio de Janeiro) IPA: /puwˈsa(ʁ)/ [puʊ̯ˈsa(χ)]
** (Southern Brazil) IPA: /puwˈsa(ɻ)/ [puʊ̯ˈsa(ɻ)]
* (Portugal) IPA: /pulˈsaɾ/ [puɫˈsaɾ]
* (Portugal) IPA: /pulˈsaɾ/ [puɫˈsaɾ]
** (Southern Portugal) IPA: /pulˈsa.ɾi/ [puɫˈsa.ɾi]
* Hyphenation: pul‧sar

### Etymology 1

Learned borrowing from Latin pulsāre. Doublet of the inherited puxar.

#### Verb

pulsar (first-person singular present pulso, first-person singular preterite pulsei, past participle pulsado)
* to pulse, beat, pulsate

##### Conjugation

$^1$Brazilian Portuguese. $^2$European Portuguese.

##### Derived terms

* pulsante

##### Related terms

* pujança
* pujante
* pulseira
* pulso
* puxante
* puxar

### Etymology 2

Borrowed from English pulsar.

#### Noun

pulsar m (plural pulsares)
* (astronomy) pulsar (rotating neutron star)

## Romanian
### Etymology

Borrowed from English pulsar or French pulsar.

### Noun

pulsar m (plural pulsari)
* pulsar

#### Declension
## Serbo-Croatian
### Etymology

Borrowed from English pulsar.

### Pronunciation

* IPA: /pǔlsaːr/

### Noun

pùlsār m (Cyrillic spelling пу̀лса̄р)
* (astronomy) pulsar

## Spanish
### Etymology

Borrowed from Latin pulsāre. Doublet of the inherited pujar.

### Pronunciation

* IPA: /pulˈsaɾ/ [pulˈsaɾ]
* Rhymes: -aɾ
* Syllabification: pul‧sar

### Verb

pulsar (first-person singular present pulso, first-person singular preterite pulsé, past participle pulsado)
* to press (a button, etc.)
    pulsar un botón ― to press a button
* (computing) to click (to press and release a button on a computer mouse)
* to pulsate

#### Conjugation

$^1$Mostly obsolete, now mainly used in legal language. $^2$Argentine and Uruguayan voseo prefers the tú form for the present subjunctive.
These forms are generated automatically and may not actually be used. Pronoun usage varies by region.

#### Related terms

* expulsar
* impulsar
* pulsación
* pulsador
* pulso

### Further reading

* “pulsar”, 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 1

Borrowed from English pulsar.

#### Noun

pulsar c
* pulsar (a rotating neutron star that emits radio pulses periodically)

##### Declension
### Etymology 2

See the etymology of the corresponding lemma form.

#### Noun

pulsar
* indefinite plural of puls

### Etymology 3

See the etymology of the corresponding lemma form.

#### Verb

pulsar
* present indicative of pulsa

### Further reading

* pulsar in Svensk ordbok.

## Turkish
### Etymology

Borrowed from English pulsar.

### Noun

pulsar (definite accusative pulsarı, plural pulsarlar)
* (astronomy) pulsar (rotating neutron star that emits radio pulses periodically)
    Synonym: atarca

#### Declension
### Further reading

* Nişanyan, Sevan (2002–) “pulsar”, in Nişanyan Sözlük