Etymologically

Etymology and origin of the Spanish word arco

Confidence
Established
Formation
Inherited
First attested
1136 More words from the 12th century
Inherited from
Latin arcus
Ultimate origin
Latin arcus
Etymology tree
inherited borrowed derived
Latin arcus
French arc
Italian arco
Romanian arc
Spanish arco
Derivations
From the same root
Latin arcuārius ← arcus
Romanian arcar ← arc

Pronunciation

  • /ˈaɾko/, [ˈaɾ.ko][1]

Forms

arco m (plural arcos)[1] Old Spanish texts also spell it archo and arquo, and archo is the form of the earliest record, an Aragonese document of 1179.[2][3] Asturian has arcu.[4]

Etymology

It is inherited from Latin arcus (“bow; arch”), and has had the same form since the earliest Old Spanish documents.[5][6][7][1] Wiktionary notes that some senses were inherited and others taken again directly from Latin.[1]

The same Latin word is Portuguese arco, Galician arco, Asturian arcu, Catalan arc, Occitan arc, French arc, Italian arco and Romanian arc.[8][9][1] In Ribagorça the Catalan dialect keeps arco, since final -o is kept there after a consonant cluster.[9]

The Latin noun goes back to Proto-Italic *arkuos (“bow”), and the derivatives show that its stem ended in *-kʷo- or *-kwo-.[10][1] De Vaan compares Germanic words for “arrow”, Old English earh and Old Norse ǫr, and assumes an Italo-Germanic word for “bow”, the arrow being “what belongs to the bow”.[10] Wiktionary gives the root as Proto-Indo-European *h₂erkʷo- (“bow, arrow”) and adds Ancient Greek ἄρκευθος (árkeuthos, “juniper”), explained by the use of supple twigs for bows.[1]

Earliest recorded meaning

Corominas dates the first record to 1136, without quoting the passage.[5][6] The earliest context in the CDH is the bow as a weapon, in the Fazienda de Ultra Mar (c. 1200, in a 13th-century copy): con my espada e con my arco “with my sword and with my bow”.[11] The Fuero de Zorita de los Canes (1218–c. 1250) gives a share to a foot soldier who brings arco o ballesta “bow or crossbow” and a hundred arrows.[11]

Semantic evolution

Alfonso X's prose already had the main senses: an arc of a curve and the bow, in the Lapidario (c. 1250–1279), and the arch of a bridge and the rainbow, in the Estoria de España (1270–1284).[12] Accounts of 1218–1300 use the plural arcos for the hoops of a barrel.[11]

Covarrubias (1611) explained the architectural sense from the shape of the drawn bow, and recorded the phrase aflojar el arco “to rest from work”.[13] The Academy's 1726 dictionary gave the weapon, the architectural arch and the bow of the violin as separate senses.[14][14] Later editions added the geometrical arc as the first sense, which the DLE keeps.[15][7]

In Latin American football the word means the goal.[7][16][1] The rainbow has many names in the dialects: arco de la vieja in the Canaries, after Portuguese, and arco de san Martín in Murcia;[17][18] Corriente sees arco de Santiago as a calque of an Arabic euphemism.[17][18]

Timeline

  • 1136 – first record of the word, according to Corominas.[5][6]
  • 1179 – archo in an Aragonese document.[2]
  • c. 1200 – the Fazienda de Ultra Mar uses it for the bow (in a 13th-century copy).[11]
  • 1250–1279 – Alfonso X's Lapidario uses it for an arc of a curve and for the bow.[12]
  • 1270–1284 – the Estoria de España uses it for the arch of a bridge and for the rainbow.[12]
  • c. 1300 – first record of the derivative arquero “archer”.[6]
  • 1513 – Nebrija gives Latin fornix for arco de edificio.[19]
  • 1532 – first records from the Americas, in Mexico.[20]
  • 1533 – first record of arcada “arcade”.[6]
  • 1611 – Covarrubias derives the architectural sense from the shape of the bow.[13]
  • 1726 – the Diccionario de Autoridades defines the weapon, the arch and the violin bow.[14]
  • 1884 – the Academy's dictionary first gives the etymology, from Latin arcus.[15]

Meanings

Noun

  1. (geometry) An arc: the part of a curve between two points.[7][1]
  2. Anything shaped like an arc: Las ramas formaban un arco sobre el sendero.[7]
  3. A bow, the weapon for shooting arrows (flechas): tiro con arco.[7][1]
  4. (music) The bow used to play the violín and other stringed instruments.[7][1]
  5. A metal hoop that holds the staves of a barrel together.[7]
  6. (architecture) An arch: a curved structure that spans an opening.[7][1]
  7. (electricity) An electric arc (arco eléctrico).[7]
  8. (sports, Latin America) The goal in football and other games.[7][16][1]
  9. (storytelling) A narrative arc.[1]

Word family

  • arcada
  • arquear
  • arquero
  • enarcar
  • arcoíris
  • arquería
  • sobrearco
  • arzón
  • Latin arcus
  • Portuguese arco
  • Catalan arc
  • English arrow

Usage notes

Arco iris (also written arcoíris) is the rainbow;[1][21] arco de triunfo a triumphal arch.[1][21]

References

  1. ^ a b c d e f g h i j k l m n o p Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b Diccionario del Español Medieval electrónico (DEMel), data publication 2026 (CC BY-SA), Universität Rostock, p. s.v. arco
  3. ^ Boggs, R. S.; Kasten, Lloyd; Keniston, Hayward; Richardson, H. B. (1946), Tentative Dictionary of Medieval Spanish, 2 vols., Chapel Hill, N.C., p. 47
  4. ^ Academia de la Llingua Asturiana (2000), Diccionariu de la Llingua Asturiana, Uviéu: ALLA; online at https://mas.academiadelallingua.com/diccionariu, p. s.v. arcu
  5. ^ a b c Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 1, 317
  6. ^ a b c d e Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. arco
  7. ^ a b c d e f g h i j k Real Academia Española; Asociación de Academias de la Lengua Española (2014–), Diccionario de la lengua española, 23rd ed., online version 23.8, https://dle.rae.es, p. s.v. arco
  8. ^ Meyer-Lübke, Wilhelm (1935), Romanisches etymologisches Wörterbuch, 3rd ed., Heidelberg: Winter, p. 618
  9. ^ a b Coromines, Joan (1980–2001), Diccionari etimològic i complementari de la llengua catalana, 10 vols., Barcelona: Curial / La Caixa (online ed., Institut d'Estudis Catalans 2024), p. 1, 363
  10. ^ a b de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  11. ^ a b c d Real Academia Española (2013–), Corpus del Diccionario histórico de la lengua española (CDH), version 3.1, https://apps.rae.es/CNDHE, p. s.v. arco
  12. ^ a b c Kasten, Lloyd A.; Nitti, John J.; Gago Jover, Francisco (2002–), Diccionario de la prosa castellana del Rey Alfonso X, New York: Hispanic Seminary of Medieval Studies (electronic edition 2024), p. s.v. arco
  13. ^ a b Covarrubias Orozco, Sebastián de (1611), Tesoro de la lengua castellana o española, Madrid: Luis Sánchez (Biblioteca Wordkers transcription, CC BY 4.0), p. 207
  14. ^ a b c Real Academia Española (1726–1739), Diccionario de la lengua castellana (Diccionario de Autoridades), 6 vols., Madrid: Francisco del Hierro, p. 1, 380
  15. ^ a b Real Academia Española (1884), Diccionario de la lengua castellana, 12th ed., Madrid: Imprenta de D. Gregorio Hernando (the first Academy edition with etymologies), p. 93
  16. ^ a b Asociación de Academias de la Lengua Española (2010), Diccionario de americanismos, Lima: Santillana; online at https://www.asale.org/damer, p. s.v. arco
  17. ^ a b Real Academia Española (2021–), Tesoro de los diccionarios históricos de la lengua española (TDHLE): Diccionario histórico (1933–1936), its unpublished slips, Diccionario histórico (1960–1996), DHECan, DHECR, DHEVen, https://www.rae.es/tdhle, p. s.v. arco
  18. ^ a b Corriente, Federico (1999), Diccionario de arabismos y voces afines en iberorromance, Madrid: Gredos, p. 221
  19. ^ Nebrija, Antonio de (1513), Vocabulario español-latino, Salamanca, ed. Marina Vidal Díez (2007), Biblioteca Virtual Miguel de Cervantes, p. 295
  20. ^ Boyd-Bowman, Peter (2003), Léxico hispanoamericano 1493–1993, ed. Ray Harris-Northall and John J. Nitti, New York: Hispanic Seminary of Medieval Studies, p. s.v. arco
  21. ^ a b Battaner Arias, Paz (dir.) (2017), Diccionario general de la lengua española VOX, Barcelona: Larousse Editorial, p. s.v. arco

Related etymologies

Cite this entry

“Arco.” Etymologically, 13 Nov. 2026, etymologically.com/es/arco. Accessed 14 Nov. 2026.

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