Etymologically

Etymology and origin of the Portuguese word membro

Confidence
Established
Formation
Inherited
First attested
1200s Cantigas de Santa Maria, spelt nembro More words from the 13th century
Inherited from
Latin membrum
Ultimate origin
Proto-Indo-European *mēms-ro-
Etymology tree
inherited borrowed derived
Latin membrum
Portuguese membro
Spanish miembro
French membre
Italian membro
Romanian membru
From the same root
Latin bimembris ← membrum
Latin commembris ← membrum
Latin membrāna ← membrum

Pronunciation

  • Brazil: /ˈmẽ.bɾu/[1]
  • Portugal: /ˈmẽ.bɾu/[1]

Forms

membro m or f by sense (plural membros, feminine membra, feminine plural membras)[1] Old Galician-Portuguese had membro and menbros beside nembro and nenbro, and nebros in the 14th century.[2][3][4]

Etymology

It is inherited from Latin membrum (“limb, part of the body”), written Old Galician-Portuguese membro and nembro in the oldest texts.[2][3][1] Nascentes considers the modern form learned, and Wiktionary says that this form displaced the older one with n-.[5][1]

The same Latin word is Galician membro, Spanish miembro, Catalan membre, French membre and Italian membro.[6][1]

The Latin noun continues Proto-Italic *memzrom.[1] De Vaan reconstructs Proto-Indo-European *mēms-ro- (“body part, meaty part”), with cognates in Old Irish mír (“portion”) and Sanskrit मांस (māṃsá, “meat”).[7]

Earliest recorded meaning

In the Cantigas de Santa Maria the word is the limbs of the body: Christ had his limbs (nenbros) nailed to the cross, and in another miracle os nembros lles cayan “their limbs fell off”.[4] One cantiga uses nembro for the old branch of a vine, and figuratively for the penis.[8]

Semantic evolution

As in Latin, the word passed from a part of the body to any part of a whole.[2][3] Barbosa (1611) has membro viril, and Morais (1789) the membro of a sentence and the members of a building in architecture.[9][10] Silva Bastos (1912) gives the person who belongs to a corporation, and the two sides of an equation.[11] Today a membro is above all a member of a group, a party or an organisation, and a state belonging to a federation or union.[2][12]

Timeline

  • 13th century – nenbros, nembros and membro in the Cantigas de Santa Maria and other texts.[4][2]
  • 14th century – the forms nenbro and nebros; the adjective membrudo “big-limbed”.[3][2]
  • 1569 – Cardoso glosses membro with Latin membrum.[13]
  • 1600 – menbros in a private letter.[14]
  • 1611 – Barbosa lists membro viril.[9]
  • 1789 – Morais records the member of a sentence.[10]
  • 1912 – Silva Bastos records the member of a corporation.[11]

Meanings

Noun

  1. (anatomy) A limb: each of the arms and legs of a person, or the corresponding parts of an animal.[2][12][1]
  2. A person who belongs to a group, party, family or other body; a member: membro da direção.[2][12][1]
  3. A state or body that belongs to a larger organisation or federation.[2][12]
  4. Any part of a whole;[2][15] (architecture) each part of a building or of an architectural element.[2][15]
  5. (grammar) A part of a sentence.[2][1]
  6. (mathematics) Each side of an equation or inequality.[2][16]
  7. (heraldry) The leg of a bird shown apart from the body.[2][15]
  8. (informal) The penis; also membro viril.[2][1]

Word family

  • membrudo
  • desmembrar

Usage notes

Wiktionary gives the word a feminine form membra in the sense of a person who belongs to a group.[1]

References

  1. ^ a b c d e f g h i j k l 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. membro
  3. ^ a b c d Cunha, Antônio Geraldo da (2010), Dicionário etimológico da língua portuguesa, 4th ed., Rio de Janeiro: Lexikon, p. s.v. membro
  4. ^ a b c 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. nembro
  5. ^ Nascentes, Antenor (1966), Dicionário etimológico resumido, Rio de Janeiro: Instituto Nacional do Livro, p. s.v. membro
  6. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. s.v. membrum
  7. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  8. ^ Universo Cantigas: Glosario da poesía medieval profana galego-portuguesa, A Coruña: Instituto da Lingua e Literatura (ILLA), Universidade da Coruña, https://www.universocantigas.gal, p. s.v. nembro
  9. ^ a b Barbosa, Agostinho (1611), Dictionarium lusitanicolatinum, Braga: Fructuoso Lourenço de Basto (CLP transcription, Universidade de Aveiro), p. s.v. membro
  10. ^ 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, 71
  11. ^ a b Silva Bastos, José Timóteo da (1912), Diccionario etymologico, prosodico e orthographico da lingua portugueza, Lisboa: Parceria António Maria Pereira, p. s.v. membro
  12. ^ a b c d Ferreira, Aurélio Buarque de Holanda, Novo dicionário Aurélio da língua portuguesa, digital edition, p. s.v. membro
  13. ^ Cardoso, Jerónimo (1569–1570), Dictionarium ex lusitanico in latinum sermonem, Lisboa: João Álvares (CLP transcription, Universidade de Aveiro), p. s.v. membro
  14. ^ 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. membro
  15. ^ a b c Dicionário Priberam da Língua Portuguesa, Lisboa: Priberam Informática, https://dicionario.priberam.org, p. s.v. membro
  16. ^ 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. membro

Related etymologies

Cite this entry

“Membro.” Etymologically, 15 Nov. 2026, etymologically.com/pt/membro. Accessed 16 Nov. 2026.

Last edited on . ·