Etymologically

Etymology and origin of the Portuguese word terceiro

Confidence
Established
Formation
Inherited
First attested
1200s spelt tercer and terceyro More words from the 13th century
Inherited from
Latin tertiarius
Ultimate origin
Latin tertius
Etymology tree
inherited borrowed derived
Latin tertius
French tiers
Italian terzo
Portuguese terço
Romanian terțiu
Spanish tercio
Latin tertiārius
Portuguese terceiro
Spanish tercero
English tertiary
French tertiaire
From the same root
Latin sēstertius ← tertius

Pronunciation

  • Brazil: /teʁˈse(j).ɾu/, [tehˈse(ɪ̯).ɾu][1]
  • São-Paulo: /teɾˈse(j).ɾu/, [teɾˈse(ɪ̯).ɾu][1]
  • Rio-de-Janeiro: /teʁˈse(j).ɾu/, [teχˈse(ɪ̯).ɾu][1]
  • Caipira: /teɻˈse(j).ɾu/, [teɻˈse(ɪ̯).ɾu][1]

Forms

terceiro (feminine terceira, masculine plural terceiros, feminine plural terceiras)[1]

Etymology

It is inherited from Latin tertiārius (“containing a third; third”), written Old Galician-Portuguese terçeiro in the oldest texts.[2][3][4][5][1] Nascentes notes that it took the place of tertius (“third”), from which the Latin adjective is formed with the suffix -ārius.[4][6][1] The learned doublet is terciário.[1]

The same Latin word is Galician terceiro, Spanish tercero, Catalan tercer, Old Occitan tersier and Old French tercier.[7][1] The shortened form Old Galician-Portuguese tercer of the medieval texts matches the Catalan word.[8][8][2]

Earliest recorded meaning

Houaiss's first records are of the 13th century, as tercer and terceyro.[2] The Cantigas de Santa Maria have terçeira and tercer: duas partes leixa e di ben a terçeira “leave out two parts and tell the third well”, and a tercer dia ressocitó-o “on the third day he raised him to life”.[8] These records already have the ordinal sense.[8]

Semantic evolution

Cardoso (1569) and Pereira (1697) gloss terceiro only with Latin sequester and internuntius, the go-between whom two parties trust.[9][10] Morais (1789) gives a mediator, a broker and, figuratively, a procurer; his edition of 1813 adds the ordinal, the third person of the verb and the Ordem Terceira, the lay order of Saint Francis.[11][12] Nascentes explains that it was the third order he founded, after the Friars Minor and the Poor Clares.[4] In law terceiro is a third party to a contract or suit; in Brazil it was a sharecropper owing a third of the crop, and recently a worker supplied by an outside firm.[2][13]

Timeline

  • 1200s – first records, spelt tercer and terceyro.[2][3]
  • 1200s – terçeira and tercer dia in the Cantigas de Santa Maria.[8]
  • 1300s – the spellings terceira and tereçeiro.[2]
  • c. 1400 – terceiro in a fragment of the Flos Sanctorum (witness 1380–1425).[14]
  • 1569 – Cardoso glosses terceiro as sequester, a go-between.[9]
  • 1789 – Morais defines it as a mediator, a broker and a procurer.[11]
  • 1813 – Morais adds the Ordem Terceira and the third person of the verb.[12]

Meanings

Numeral

  1. third: coming after the second in a series: Moro no terceiro andar.[2][5][13][1]

Noun

  1. The one in third place.[2][13]
  2. A mediator or intercessor (medianeiro); also a go-between in love affairs, a procurer (alcoviteiro).[2][13][15]
  3. A third person; someone else, not the speaker nor the listener: Não contes isto a terceiros.[2][5][1]
  4. (law) A third party: a person outside a legal relationship or contract, or one who has an interest in a suit between others.[2][13][5]
  5. (Brazil) A sharecropper who gives a third of the crop to the landowner.[2][13]
  6. (business) A worker who serves a firm through a contracted outside company.[2]
  7. (religion) A member of a third order, especially the Franciscan one; a tertiary (terciário).[2][5][15]

Adverb

  1. In the third place, thirdly.[2][16]

Word family

  • terceirizar
  • terceirização
  • terceirista

Usage notes

Terceiro is also a surname, in origin a nickname from the numeral.[17] In popular European Portuguese o terceiro andar “the third floor” is the head.[15]

References

  1. ^ a b c d e f g h i j k 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. terceiro
  3. ^ a b Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. terço
  4. ^ a b c Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. terceiro
  5. ^ a b c d e 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. terceiro
  6. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  7. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter
  8. ^ a b c d e 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. terceiro
  9. ^ a b Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. terceiro
  10. ^ Pereira, Bento (1697), Thesouro da lingoa portuguesa, in the 1697 edition of his Prosodia (1st ed. 1647; CLP transcription, Universidade de Aveiro), p. s.v. terceiro
  11. ^ 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, 453
  12. ^ a b Silva, António de Morais (1813), Diccionario da lingua portugueza, 2nd ed., 2 vols., Lisboa: Typographia Lacerdina, p. 2, 767
  13. ^ a b c d e f Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. terceiro
  14. ^ Centro de Linguística da Universidade de Lisboa, CTA – Corpus de Textos Antigos, https://teitok.clul.ul.pt/cta, p. s.v. terceiro
  15. ^ a b c Porto Editora (2013), Grande Dicionário da Língua Portuguesa, Porto: Porto Editora, p. 8917
  16. ^ 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. terceiro
  17. ^ Nascentes, Antenor (1952), Dicionário etimológico da língua portuguesa, vol. 2: Nomes próprios, Rio de Janeiro, p. s.v. terceiro

Related etymologies

Cite this entry

“Terceiro.” Etymologically, 15 Nov. 2026, etymologically.com/pt/terceiro. Accessed 16 Nov. 2026.

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