Etymologically

Etymology and origin of the Portuguese word quarto

Confidence
Established
Formation
Inherited
First attested
1192 a document, nas tres quartas do padroadigo More words from the 12th century
Inherited from
Latin quartus
Ultimate origin
Latin quartus
Etymology tree
inherited borrowed derived
Latin quārtus
French quart
Italian quarto
Portuguese quarto
Spanish cuarto
From the same root
Latin quārta ← quārtus
Latin quartarium ← quārtus
Latin quārtārius ← quārtus
Latin quārtum ← quārtus
French quarte ← quart
French quartier ← quart
Spanish cuartillo ← cuarto

Pronunciation

  • Brazil: /ˈkwaʁ.tu/, [ˈkwah.tu][1]
  • São-Paulo: /ˈkwaɾ.tu/[1]
  • Rio-de-Janeiro: /ˈkwaʁ.tu/, [ˈkwaχ.tu][1]
  • Caipira: /ˈkwaɻ.tu/[1]

Forms

quarto m (plural quartos)[1] As an ordinal it agrees: quarto, quarta, quartos, quartas.[1] Houaiss gives a form carto for 1192.[2]

Etymology

It is inherited from Latin quārtus (“fourth”), written Old Galician-Portuguese quarto and Old Galician-Portuguese carto in the oldest texts.[2][3][1] The ordinal, the fraction “quarter” and the noun “room” are one word.[2][3] Houaiss says the noun first meant a quarter of a house and so a private chamber.[2] Nascentes explains the room as a use of the fraction for an indefinite division, not necessarily into four, just as quatro can mean “a few”, as in “between four walls”.[3] Corominas gives the same explanation for Spanish cuarto “room”, which he dates to the 17th century.[4]

The same Latin word is Galician cuarto, Catalan quart, French quart and Italian quarto.[5][1]

The Latin word goes back to *kʷeturtos and *kʷeturtos, from *kʷetwóres (“four”), like Ancient Greek τέταρτος (tétartos).[1][6]

Earliest recorded meaning

A document of 1192–1193 speaks of as tres quartas do padroadigo “three quarters of the patronage”, and the testament of Afonso II (1214) gives a quarta “a quarter” to the hospitallers and to the bishop.[7] The Miragres de Santiago have hũu carto de carneiro “a quarter of mutton”, and the Cantigas de Santa Maria the ordinal: a quarto dia “on the fourth day”.[7]

Semantic evolution

The ordinal and the fraction are medieval.[7] Houaiss dates the noun “a fourth part” to 1720.[2] Bluteau (1712–1728) has the quarto as a cask holding a quarter of a pipe and the quarto of a building, a part of a large house with its own entrance.[8] Morais (1789) adds quarto de dormir “bedroom”, which has become the main sense of the noun.[9][2][1]

Other senses grew from the fraction: a quarter of an hour, a watch at sea or on guard (a quarter of the night), the quarter of a slaughtered animal, the phases of the moon (quarto crescente).[2][10] In north-eastern Brazil fazer quarto is to keep a wake for the dead.[11][2]

Timeline

  • 1192 – nas tres quartas do padroadigo in a document.[7][2]
  • 1214 – a quarta in the testament of Afonso II.[7]
  • 13th century, second half – a quarto dia in the Cantigas de Santa Maria.[7]
  • 1569 – Cardoso translates Quarto by Latin quartus.[12]
  • 1712 – Bluteau records the quarto of a building and the cask.[8]
  • 1720 – Houaiss's first date for the noun “fourth part”.[2]
  • 1789 – Morais has quarto de dormir.[9]

Meanings

Noun

  1. A room of a house, especially a bedroom: O apartamento tem dois quartos.[2][1]
  2. A quarter, a fourth part: um quarto do bolo.[2][1]
  3. A quarter of an hour: São dez e um quarto.[2][10]
  4. A turn of watch or guard duty, at sea or on land.[2][10]
  5. A quarter of a slaughtered animal, with the leg.[2][13]
  6. (astronomy) Each quarter of the moon's cycle.[2]
  7. (historical) A cask or measure for wine holding a quarter of a pipe or tun.[2][1]
  8. (north-eastern Brazil) A wake for the dead (velório).[2][11]

Numeral

  1. fourth: o quarto andar.[2][1]

Word family

  • quarta
  • quartinho
  • quartilho

Usage notes

As a man's name Quarto is from the Latin name given to a fourth son.[14]

References

  1. ^ a b c d e f g h i j k l m n Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p q r s Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. quarto
  3. ^ a b c Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. quarto
  4. ^ Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. cuarto
  5. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 6936
  6. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. quartus
  7. ^ a b c d e f Instituto da Lingua Galega, Dicionario de dicionarios do galego medieval (DDGM), ed. Ernesto González Seoane, Santiago de Compostela: Universidade de Santiago de Compostela, https://ilg.usc.gal/ddgm, p. s.v. quarto
  8. ^ a b Bluteau, Raphael (1712–1728), Vocabulario portuguez e latino, 8 vols. + 2 supplement vols., Coimbra / Lisboa (CLP transcription, Universidade de Aveiro), p. s.v. quarto
  9. ^ a b Silva, António de Morais (1789), Diccionario da lingua portugueza composto pelo padre D. Rafael Bluteau, reformado, e accrescentado, 2 vols., Lisboa: Simão Thaddeo Ferreira, p. 2, 271
  10. ^ a b c Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. quarto
  11. ^ a b Navarro, Fred (2004), Dicionário do Nordeste, São Paulo: Estação Liberdade, p. s.v. quarto
  12. ^ Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. quarto
  13. ^ Academia das Ciências de Lisboa, Dicionário da Língua Portuguesa, revised online edition (2023–) of the Dicionário da Língua Portuguesa Contemporânea (2001), https://dicionario.acad-ciencias.pt, p. s.v. quarto
  14. ^ Nascentes, Antenor (1952), Dicionário etimológico da língua portuguesa, vol. 2: Nomes próprios, Rio de Janeiro, p. 409

Related etymologies

Cite this entry

“Quarto.” Etymologically, 15 Nov. 2026, etymologically.com/pt/quarto. Accessed 16 Nov. 2026.

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