Etymologically

Etymology and origin of the Portuguese word relógio

Confidence
Disputed
Formation
Borrowing
First attested
1416 a document, spelt relogeo More words from the 15th century
From
Latin horologium
Ultimate origin
Ancient Greek ὡρολόγιον
Etymology tree
inherited borrowed derived
Ancient Greek ὡρολόγιον (hōrológion)
Latin hōrologium
French horloge
Italian orologio
Portuguese relógio
The word's journey
From the same root
Spanish reloj ← hōrologium

Pronunciation

  • Brazil: /ʁeˈlɔ.ʒju/, [heˈlɔ.ʒju][1]
  • Rio-de-Janeiro: /ʁeˈlɔ.ʒju/, [χeˈlɔ.ʒju][1]
  • Portugal: /ʁɨˈlɔ.ʒju/[1]

Forms

relógio m (plural relógios)[1] Houaiss records relogeo (1416), rellogios and relogyo (15th century), relojo (1589) and relójio (1858).[2] Bluteau heads the word relôgio.[3]

Etymology

In Houaiss's view it comes from Latin hōrologium (“sundial, water clock”), through an aphetic form *rologium of the Vulgar Latin of Hispania that Machado proposed.[2] Nascentes and Aurélio also derive it from the Latin word, with the loss of its first ⟨o⟩ and a dissimilation of the next.[4][5] Wiktionary and the DLP instead take it from Spanish reloj, and the REW derives the Spanish word, and the Portuguese one through it, from Catalan rellotge.[1][6][7]

Corominas traces the Spanish word, first recorded about 1400, to Old Catalan relotge, whose older forms orollotge and arelotge stand closer to the Latin; mechanical clocks with wheels and weights are mentioned in Catalonia in the 14th and 15th centuries.[8][9] The Latin word is from Ancient Greek ὡρολόγιον (hōrológion), from ὡρολόγος (hōrológos), a compound of ὥρα (hṓra, “hour”) and λέγω (légō, “to count, tell”).[1][10]

Other forms of the Latin word are Galician reloxo, Occitan relòtge, Italian orologio and French horloge.[1][7] The learned horológio is a doublet.[1]

Earliest recorded meaning

The first record is relogeo in a document of 1416.[2] In Latin the word meant a sundial or a water clock.[10] Houaiss's first sense is a mechanism that marks the time and shows the hours.[2]

Semantic evolution

Barbosa (1611) has relogio de sol “sundial” and relogio de agoa “water clock”.[11] Bluteau (1712–1728) explains the word from Greek and tells the history of the sundial.[3] Morais (1813) defines the clock as a machine of wheels, weights and springs that moves a pointer.[12]

In Brazil relógio is also a meter for water, gas or electricity, and informally the stomach, a person who works with great regularity, a plant of the genus Sida and a capoeira movement.[2] Caldas Aulete and Michaelis record a lasting ailment left by an illness.[13][14] In Bahia the word names a slow-moving freshwater turtle.[15] Tetum borrowed it as relójiu.[1]

Timeline

  • 1416 – first record, spelt relogeo.[2]
  • 15th century – the spellings rellogios and relogyo.[2]
  • 1569 – Cardoso renders relogio with Latin horologium.[16]
  • 1589 – the variant relojo.[2][17]
  • 1611 – Barbosa lists the sundial and the water clock.[11]
  • 1757 – a private letter writes rellogio.[18]
  • 1813 – Morais describes the clock with its wheels, weights and springs.[12]
  • 1858 – the spelling relójio.[2]

Meanings

Noun

  1. A clock or watch, any instrument for measuring time and showing the hours: O relógio da estação parou.[2][5][1]
  2. (Brazil) A meter for water, gas or electricity.[2][13]
  3. (figurative, informal) A person who works with great regularity.[2]
  4. (figurative, informal) The stomach.[2][14]
  5. (botany) A woody herb of the mallow family (Sida), used in folk medicine against indigestion.[2][13]
  6. (capoeira) A movement in which the body spins parallel to the ground, supported on one hand.[2]

Word family

  • relojoeiro
  • relojoaria
  • rádio-relógio

References

  1. ^ a b c d e f g h i j Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. relógio
  3. ^ 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. relógio
  4. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. relógio
  5. ^ a b Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. relógio
  6. ^ 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. relógio
  7. ^ a b Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 4183
  8. ^ Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 4, 869
  9. ^ Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. reloj
  10. ^ a b Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. hōrologium
  11. ^ a b Barbosa, Agostinho (1611), Dictionarium lusitanicolatinum, Braga: Fructuoso Lourenço de Basto (CLP transcription, Universidade de Aveiro), p. s.v. relogio
  12. ^ a b Silva, António de Morais (1813), Diccionario da lingua portugueza, 2nd ed., 2 vols., Lisboa: Typographia Lacerdina, p. 2, 591
  13. ^ a b c Aulete, Francisco Júlio Caldas, Dicionário contemporâneo da língua portuguesa (1st ed. 1881), online as Aulete Digital, Rio de Janeiro: Lexikon, https://aulete.com.br, p. s.v. relógio
  14. ^ a b Michaelis: Moderno Dicionário da Língua Portuguesa, São Paulo: Melhoramentos (online as Michaelis Dicionário Brasileiro da Língua Portuguesa, https://michaelis.uol.com.br), p. s.v. relógio
  15. ^ Navarro, Fred (2004), Dicionário do Nordeste, São Paulo: Estação Liberdade, p. s.v. relógio
  16. ^ Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. relogio
  17. ^ Houaiss, Antônio; Villar, Mauro de Salles (2001), Dicionário Houaiss da língua portuguesa, Rio de Janeiro: Objetiva, p. s.v. relojo
  18. ^ CLUL (ed.) (2014), P.S. Post Scriptum: Arquivo Digital de Escrita Quotidiana em Portugal e Espanha na Época Moderna, Lisboa: Centro de Linguística da Universidade de Lisboa, http://ps.clul.ul.pt, p. s.v. relógio

Related etymologies

Cite this entry

“Relógio.” Etymologically, 15 Nov. 2026, etymologically.com/pt/rel%C3%B3gio. Accessed 16 Nov. 2026.

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