Etymologically

Etymology and origin of the Spanish word reducir

Confidence
Established
Formation
Borrowing
First attested
1350 a document of Charles II taking a monastery under his protection More words from the 14th century
Borrowed from
Latin reduco
Ultimate origin
Proto-Indo-European *dewk-
Etymology tree
inherited borrowed derived
Latin dūcō
Latin redūcō
French réduire
Spanish reducir
From the same root
Latin abdūcō ← dūcō
Latin addūcō ← dūcō
Latin circumdūcō ← dūcō
Latin condūcō ← dūcō
Latin dēdūcō ← dūcō
Latin dīdūcō ← dūcō
Latin ductiō ← dūcō
Latin ducto ← dūcō
Latin ductor ← dūcō
Latin ductus ← dūcō
Latin dux ← dūcō
Latin ēdūcō ← dūcō
Latin indūcō ← dūcō
Latin intrōdūcō ← dūcō
Latin obdūcō ← dūcō
Latin perduco ← dūcō
Latin praeduco ← dūcō
Latin prōdūcō ← dūcō
Latin sēdūcō ← dūcō
Latin subdūcō ← dūcō
Latin trādūcō ← dūcō
English reduce ← redūcō
Latin reductiō ← redūcō
Latin reductus ← redūcō

Pronunciation

  • /reduˈθiɾ/, [re.ð̞uˈθiɾ], /reduˈsiɾ/[1]

Forms

reducir (first-person singular present reduzco, first-person singular preterite reduje, past participle reducido)[1] Old Spanish wrote reduzir, with preterite forms such as reduxo.[2] Autoridades still spells the preterite reduxe.[3]

Etymology

It is borrowed from Latin redūcō (“to lead back, bring back”), taken from Latin as a learned word.[4][5][6][1] The Latin verb is formed from re- (“back”) and dūcō (“to lead”).[7][8][9]

The same Latin verb gave Portuguese reduzir, Catalan reduir, French réduire and Italian ridurre.[10][1] The French verb was taken from Latin around 1175 and reshaped after conduire.[11]

The simple verb goes back to Proto-Italic *doukō, from the root Proto-Indo-European *dewk- (“to draw, pull”), which is also the source of English tow.[1][12] Spanish has a whole series of learned verbs from its compounds, among them aducir, conducir, deducir, inducir, introducir, producir, seducir and traducir.[5][4]

Earliest recorded meaning

The CDH's earliest hit is in the Castigos that it dates 1293, where the passions of the soul are said to reduçen “come down to” twelve.[2] A document of Charles II of 1350 orders anything done against a monastery to be reduzir al primer estado, “brought back to its first state”, which is the Latin sense “restore”.[2] Juan Ruiz uses it for leading people back to good memory and conduct, and Juan Fernández de Heredia in the late 14th century for bringing a people back under royal rule.[2] Corominas dates the verb from about 1440, in Juan de Mena.[4][5]

Semantic evolution

The first meanings were all Latin: to lead back, to restore to a former place or state, and to bring back to obedience.[2][3] Bénaben notes that the verb later took the narrower sense of bringing something to a lower or simpler state.[8] Autoridades already records turning one thing into an equivalent one, especially a lesser one, and changing one coin for another.[3] The 1843 Academy dictionary lists the senses “lessen, narrow”, “sum up”, “break into small pieces”, “subdue” and “persuade”, and later editions added surgery (setting a broken or dislocated bone), mathematics, logic and chemistry.[13][14][15]

Modern dictionaries put “lessen” first and add the culinary sense of boiling a sauce down.[16][6] In Chile, Paraguay, Argentina and Uruguay reducir is used for dealing in stolen goods.[17]

Timeline

  • 1293 – the CDH's earliest hit, in the Castigos (Madrid, BNM ms. 6559).[2]
  • 1350 – a Navarrese document uses reduzir for “restore to the former state”.[2]
  • 1376–1396 – Juan Fernández de Heredia uses reduzir in his translations.[2]
  • 1438 – the date of first record in Corominas's Breve diccionario.[5][18]
  • c. 1440 – Juan de Mena, the DCECH's first record.[4]
  • c. 1495 – Nebrija gives Latin redigo and reduco as its equivalents.[19]
  • 1525 – the first record from the Americas, in Panama, for reducing a royal tax.[20]
  • 1611 – Covarrubias gives the reflexive reduzirse the sense “be convinced, return to better order”.[21]
  • 1726–1739 – Autoridades notes the irregular forms reduzco and reduxe.[3]
  • 1884 – the Academy's dictionary gives the etymology, Latin reducere.[22]

Meanings

Verb

  1. To bring something back to the place or state it had before.[6]
  2. To reduce, lessen or cut down: Han reducido el horario de la biblioteca.[6][1]
  3. To narrow or tighten.[6]
  4. To change something into an equivalent thing, usually a smaller or lesser one: reducir a cenizas “burn to ashes”.[6][8]
  5. To change money into other coins.[6]
  6. To sum up (resumir) a speech or account in a few words.[6]
  7. To break a body into small pieces.[6]
  8. To include or arrange under a certain number or quantity; also reflexive.[6]
  9. To subdue (someter) by force someone or something that resists: Los guardias redujeron al ladrón.[6][23]
  10. To persuade or win someone over with arguments.[6]
  11. (cooking) To boil a liquid down so that it thickens.[6][16]
  12. (logic) To turn an imperfect figure of a syllogism into a perfect one.[6]
  13. (mathematics) To simplify an expression; to express a quantity in units of another kind, as hours in minutes.[6]
  14. (surgery) To set a broken or dislocated bone, or put back a hernia.[24][23]
  15. (chemistry) To remove oxygen from a body, or make an atom gain electrons.[24]
  16. (Chile, Paraguay, Argentina, Uruguay) To buy and sell stolen goods.[17]

Word family

  • reducible
  • reducción
  • reducido

Usage notes

Reducir is conjugated like conducir: reduzco, reduje, redujera.[1][3] Chilean speakers and some older authors also used regular preterites such as reducí and reduciera, which Román criticised.[25]

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h Real Academia Española (2013–), Corpus del Diccionario histórico de la lengua española (CDH), version 3.1, https://apps.rae.es/CNDHE, p. s.v. reducir
  3. ^ a b c d e Real Academia Española (1726–1739), Diccionario de la lengua castellana (Diccionario de Autoridades), 6 vols., Madrid: Francisco del Hierro, p. 5, 533
  4. ^ a b c d Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. 1, 61
  5. ^ a b c d Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. aducir
  6. ^ a b c d e f g h i j k l m n o 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. reducir
  7. ^ Gómez de Silva, Guido (1988), Breve diccionario etimológico de la lengua española, México: Fondo de Cultura Económica / El Colegio de México, p. 598
  8. ^ a b c Bénaben, Michel (2000), Dictionnaire étymologique de l'espagnol, Paris: Ellipses, p. s.v. reducir
  9. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press, p. s.v. redūcō
  10. ^ García de Diego, Vicente (1985), Diccionario etimológico español e hispánico, 2nd ed., Madrid: Espasa-Calpe (1st ed. 1954), p. 5516
  11. ^ Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert, p. s.v. réduire
  12. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  13. ^ Real Academia Española (1843), Diccionario de la lengua castellana, 9th ed., Madrid: Imprenta de D. Francisco María Fernández, p. 619
  14. ^ Real Academia Española (1869), Diccionario de la lengua castellana, 11th ed., Madrid: Imprenta de Don Manuel Rivadeneyra, p. 664
  15. ^ Alemany y Bolufer, José (1917), Diccionario de la lengua española, Barcelona: Ramón Sopena, p. 1430
  16. ^ a b Battaner Arias, Paz (dir.) (2017), Diccionario general de la lengua española VOX, Barcelona: Larousse Editorial, p. s.v. reducir
  17. ^ 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. reducir
  18. ^ Segura Munguía, Santiago (2001), Nuevo diccionario etimológico latín-español y de las voces derivadas, Bilbao: Universidad de Deusto, p. 645
  19. ^ Lleal, Coloma (dir.), DICCA-XV: Diccionario del castellano del siglo XV en la Corona de Aragón, Barcelona: Universitat de Barcelona, Grup d'Estudis d'Història de la Llengua (GHCL), https://ghcl.ub.edu/diccaxv, p. s.v. reducir
  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. reducir
  21. ^ Covarrubias Orozco, Sebastián de (1611), Tesoro de la lengua castellana o española, Madrid: Luis Sánchez (Biblioteca Wordkers transcription, CC BY 4.0), p. 1251
  22. ^ Real Academia Española (1884), Diccionario de la lengua castellana, 12th ed., Madrid: Imprenta de D. Gregorio Hernando (the first Academy edition with etymologies), p. 909
  23. ^ a b Moliner, María (2007), Diccionario de uso del español, 3rd ed., Madrid: Gredos, p. s.v. reducir
  24. ^ a b Real Academia Nacional de Medicina (2011), Diccionario de términos médicos, Madrid: Editorial Médica Panamericana; online at https://dtme.ranm.es, p. s.v. reducir
  25. ^ Román, Manuel Antonio (1901–1918), Diccionario de chilenismos y de otras voces y locuciones viciosas, 5 vols., Santiago de Chile: Imprenta de San José, p. 50

Related etymologies

Cite this entry

“Reducir.” Etymologically, 7 Nov. 2026, etymologically.com/es/reducir. Accessed 7 Nov. 2026.

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