Etymology and origin of the Latin word exclusio
- Confidence
- Established
- Formation
- Derivation
- First attested
- 190–159 BC Terence More words from the 2nd century BC
- Ultimate origin
- Latin exclūdō
Etymology tree
From the same root
Forms
exclūsiō f (genitive exclūsiōnis); third declension[1]
Etymology
It is formed from Latin exclūdō + -tiō.[2][3] The verb is formed from ex- and claudō (“to shut”).[3] For that verb de Vaan reconstructs Proto-Italic *klaud-e/o- and Proto-Indo-European *kleh₂u-d- (“to shut”), though he allows that it may instead be derived from the stem of clāvis (“key”).[3]
Earliest recorded meaning
Terence has it in the Eunuch, of a person being shut out: de exclusione verbum nullum, “not a word about the shutting out”.[4][5][3]
Semantic evolution
Lewis & Short call it very rare and note that it is not in Cicero.[4] Vitruvius uses it of keeping out the winds,[4][5] and in law Ulpian describes an exceptio as a kind of exclusion, a debarring.[4][6][2]
Medieval Latin used it widely: for exclusion in general, for an exception, for exclusion from the Church and for banishment.[7] British documents use it for the keeping out of water.[8] Köbler also records a medieval sense “sluice”.[9] English borrowed it about 1400 as exclusion.[10]
Timeline
- 190–159 BC – Terence uses it of a person shut out.[4][9]
- c. 84–c. 25 BC – Vitruvius uses it of keeping out the winds.[4][5]
- before 223 AD – Ulpian uses it in a legal definition.[4][6]
- 1362 – An English patent roll uses it of keeping out seawater.[8]
- c. 1400 – English borrows it as exclusion.[10]
Meanings
Noun
- The shutting out of a person, exclusion.[2][4][5]
- The keeping out of something (such as wind).[4][5]
- (law) A Debarring; an exception.[2][6]
- (Medieval Latin) Exclusion from the Church; banishment.[7]
- (Medieval Latin) A sluice.[9]
References
- ^ Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ a b c d de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
- ^ a b c d e f g h i Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ a b c d e Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
- ^ a b c Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
- ^ a b Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
- ^ 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
- ^ a b c Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Cite this entry
“Exclusio.” Etymologically, 7 Nov. 2026, etymologically.com/la/exclusio. Accessed 8 Nov. 2026.
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