Etymologically

contaminatio

Etymology and origin of the Latin word contaminatio

Confidence
Established
Formation
Derivation
First attested
AD 204, acts of the Secular Games
Ultimate origin
Latin contāminō
Etymology tree
inherited borrowed derived
Latin contamino
Latin contaminatio
English contamination

Pronunciation

  • Classical: [kɔn.taː.mɪˈnaː.ti.oː][1]
  • Ecclesiastical: [kon.ta.miˈnat.t͡si.o][1]

Forms

contāminātiō f (genitive contāminātiōnis); third declension[1]

Etymology

It is from Latin contāminō (“to pollute, spoil”) + -tiō.[2][3][1] The verb originally meant “to come into contact with” and, in de Vaan's view, is most likely built on a noun *tāmen “contact”, which goes back to Proto-Italic *tag(s)men (“contact”) and Proto-Indo-European *th₂g-men-, the root of tangō (“to touch”).[4]

Earliest recorded meaning

The earliest dated instance is in the acts of the Secular Games of Septimius Severus (AD 204), where a place is to be kept free of all defilement.[3] Soon after, Ulpian uses it in the Digest of a husband who does not resent the defilement of his marriage by an adulterous wife.[3][5][6]

Semantic evolution

The word is post-classical.[5] It meant ritual and moral defilement or pollution,[2][3] a sense much used by Christian writers such as Arnobius and Firmicus Maternus,[3] and the Old Latin Bible uses it for the pollution of sacrifices.[3] Julius Obsequens applies it to a disease of the belly.[5][7][8]

Medieval Latin kept both the physical sense, soiling or infection, with dirt or a discharge by metonymy, and the spiritual one.[9][10] English took it as contamination in the 15th century, first in the sense “infection”.[11]

Timeline

  • AD 204 – The acts of the Secular Games of Septimius Severus speak of keeping a place free of all defilement.[3]
  • before 223 AD – Ulpian uses it of the defilement of a marriage by adultery.[3][12]
  • 297–310 AD – Arnobius uses it often of moral and religious defilement.[3][12]
  • 343/350 AD – Firmicus Maternus writes of a deity appeased by the pollution of the body.[3][12]
  • early 15th century – English borrows it as contamination, “infection”.[11]

Meanings

Noun

  1. Defilement, pollution, moral or ritual.[2][5][3]
  2. Corruption, disease.[5][7]
  3. (Medieval Latin) Physical soiling or infection; dirt or a discharge.[9][10]
  4. (Ecclesiastical Latin) Contamination.[13]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e f g h i j k Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  5. ^ a b c d e Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  7. ^ a b Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  8. ^ Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  9. ^ a b Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
  10. ^ a b Latham, R. E., D. R. Howlett, R. K. Ashdowne, et al. (1975–2013), Dictionary of Medieval Latin from British Sources, London: British Academy / Oxford University Press
  11. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  12. ^ a b c Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  13. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson

Borrowed into

Cite this entry

“Contaminatio.” Etymologically, 24 Oct. 2026, etymologically.com/la/contaminatio. Accessed 24 Oct. 2026.

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