Etymologically

defaecatio

Etymology and origin of the Latin word defaecatio

Confidence
Established
Formation
Derivation
First attested
c. 160–220 Tertullian, De anima More words from the 2nd century
Ultimate origin
Latin faex
Etymology tree
inherited borrowed derived
Latin faex
English feces
Latin dēfaecō
Latin dēfaecātiō
English defecation

Forms

dēfaecātiō f (genitive dēfaecātiōnis); third declension[1] The spelling dēfēcātiō also occurs.[2][3]

Etymology

It is formed from Latin dēfaecō + -tiō.[1][4] The verb, “to cleanse from dregs, purify”, comes from the phrase ⟨dē faece⟩ “from the dregs”, from dē and faex (“dregs”).[5]

Earliest recorded meaning

It first appears in Tertullian's De anima, in the phrase carnis defaecatio, a purging of the flesh.[2][6][4]

Semantic evolution

Pacian also has it,[7][6] and Jerome uses it in his book of Hebrew names to explain a name.[4] In the medieval glossaries it is a purification: Ælfric glosses it with Old English hlyttrung, and the Catholicon Anglicum renders “a clensynge” with it.[8] A treatise on the heart by Alfred of Shareshill lists it with attraction, retention and digestion among the processes of nutrition, in the sense of defecation.[8]

English defecation first meant the purification of the mind or soul (1640s) and the separating of a liquid from its dregs (1650s); the sense of evacuating the bowels dates from 1830.[5]

Timeline

  • c. 160–220 AD – Tertullian speaks of a purging of the flesh.[2][9]
  • 2nd half of the 4th century AD – Pacian uses it.[7][6][9]
  • c. 383–419/420 AD – Jerome uses it in explaining a Hebrew name.[4][9]
  • 1640s – English defecation appears, in a figurative sense.[5]

Meanings

Noun

  1. A cleansing, purification.[2][7][10][8]
  2. (Medieval Latin) defecation.[8][1]

References

  1. ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  3. ^ Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
  4. ^ a b c d Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  5. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  6. ^ a b c du Cange, Charles du Fresne, et al. (1883–1887), Glossarium mediae et infimae latinitatis, augmented ed. by Léopold Favre, Niort: L. Favre
  7. ^ a b c Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  8. ^ a b c d 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
  9. ^ a b c Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  10. ^ Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
Cite this entry

“Defaecatio.” Etymologically, 7 Nov. 2026, etymologically.com/la/defaecatio. Accessed 8 Nov. 2026.

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