Etymologically

Etymology and origin of the Spanish word interno

Confidence
Established
Formation
Borrowing
First attested
c. 1450 Diego de Burgos More words from the 15th century
Borrowed from
Latin internus
Ultimate origin
Latin inter
Etymology tree
inherited borrowed derived
Latin inter
Aromanian ti
Aromanian trã
French entre
Latin internus
Italian interno
Spanish interno
From the same root
Latin deinter ← inter
Latin inter- ← inter
Latin interdiū ← inter
Latin interdum ← inter
Latin intereā ← inter
Latin interim ← inter
Latin interior ← inter
Latin intermedius ← inter
Latin interpres ← inter
Latin intrīnsecus ← inter
Latin internālis ← internus

Pronunciation

  • /inˈteɾno/, [ĩn̪ˈt̪eɾ.no][1]

Forms

interno (feminine interna, masculine plural internos, feminine plural internas)[1]

Etymology

It is borrowed from Latin internus (“inward, internal”), a learned word of the middle of the 15th century.[2][3][4][1][5] The Latin adjective is formed from inter (“between, among”) with the suffix -nus.[6][1] The preposition gave the inherited entre.[2] The same Latin word is Italian interno, French interne and Catalan intern.[7][8]

Earliest recorded meaning

Corominas finds the word first in Diego de Burgos, in the middle of the 15th century, and then in Villaviciosa in 1615.[2] The HSMS archive has it in a text of 1487.[9] It meant “inner, interior”.[10][11]

Semantic evolution

Covarrubias in 1611 and the Diccionario de Autoridades define it simply as “interior”.[10][11] Autoridades quotes lo interno del cuerpo “the inside of the body” from Pellicer.[10][11] The Academy's dictionary of 1843 records the adverbial phrase de interno “inwardly” as old.[12] Domínguez in 1846 adds the boarding pupil, the inner parts of anatomy and internal diseases, and the Academy accepted the pupil who lives in his school in 1884.[13][14] Alemany in 1917 adds the medical students who live in the hospitals where they serve.[15] The DLE now also has the prisoner of a penitentiary, the live-in domestic servant and the resident doctor.[4] Moliner notes that interno is preferred to interior for what happens inside something, as in discordias internas.[16]

Timeline

  • mid-15th century – first record, in Diego de Burgos.[2][3]
  • 1487 – a record in the HSMS texts.[9]
  • 1611 – Covarrubias defines it as “interior”.[10]
  • 1697 – first record from the Americas, in Mexico City: en lo interno de esta gobernación.[17]
  • 1884 – the Academy's dictionary adds the boarding pupil.[14]
  • 1917 – Alemany records the medical student living in a hospital.[15]

Meanings

Adjective

  1. internal, inner, interior: las paredes internas del tubo.[4][16][1]
  2. Of a person: living in a school or hospital, as a boarder, and also used as a noun.[4][16]
  3. Of a person: held in a prison, and mostly used as a noun.[4][1]
  4. Of a domestic employee: living in the house where he or she works.[4][16]
  5. Of a medical student: assisting in a hospital department or clinic.[4]
  6. (Dominican Republic) Admitted to hospital.[18]

Noun

  1. A resident doctor.[4]

Word family

  • internar
  • internado
  • interior
  • externo
  • entre
  • íntimo
  • Latin internus

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Corominas, Joan; Pascual, José A. (1980–1991), Diccionario crítico etimológico castellano e hispánico, 6 vols., Madrid: Gredos, p. s.v. entre
  3. ^ a b Corominas, Joan (1973), Breve diccionario etimológico de la lengua castellana, 3rd ed., Madrid: Gredos, p. s.v. entre
  4. ^ a b c d e f g h 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. interno
  5. ^ Battaner Arias, Paz (dir.) (2017), Diccionario general de la lengua española VOX, Barcelona: Larousse Editorial, p. s.v. interno
  6. ^ Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  7. ^ Echegaray, Eduardo de (1887–1889), Diccionario general etimológico de la lengua española, 5 vols., Madrid: José María Faquineto, p. 870
  8. ^ Segura Munguía, Santiago (2001), Nuevo diccionario etimológico latín-español y de las voces derivadas, Bilbao: Universidad de Deusto
  9. ^ a b Hispanic Seminary of Medieval Studies (2026), Old Spanish Textual Archive (OSTA): semi-paleographic transcriptions of Old Spanish texts, ed. Francisco Gago Jover et al., https://www.hispanicseminary.org, p. s.v. interno
  10. ^ a b c d Covarrubias Orozco, Sebastián de (1611), Tesoro de la lengua castellana o española, Madrid: Luis Sánchez (Biblioteca Wordkers transcription, CC BY 4.0), p. 1050
  11. ^ a b c Real Academia Española (1726–1739), Diccionario de la lengua castellana (Diccionario de Autoridades), 6 vols., Madrid: Francisco del Hierro, p. 4, 294
  12. ^ Real Academia Española (1843), Diccionario de la lengua castellana, 9th ed., Madrid: Imprenta de D. Francisco María Fernández, p. 413
  13. ^ Domínguez, Ramón Joaquín (1846–1847), Diccionario nacional o gran diccionario clásico de la lengua española, 2 vols., Madrid: Establecimiento Léxico-Tipográfico de R. J. Domínguez, p. 1008
  14. ^ 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. 605
  15. ^ a b Alemany y Bolufer, José (1917), Diccionario de la lengua española, Barcelona: Ramón Sopena, p. 961
  16. ^ a b c d Moliner, María (2007), Diccionario de uso del español, 3rd ed., Madrid: Gredos, p. s.v. interno
  17. ^ 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. interno
  18. ^ Academia Dominicana de la Lengua; Instituto Guzmán Ariza de Lexicografía (2024), Diccionario del español dominicano, 2nd ed., online at https://ded.igalex.org, p. s.v. interno

Related etymologies

Cite this entry

“Interno.” Etymologically, 7 Nov. 2026, etymologically.com/es/interno. Accessed 7 Nov. 2026.

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