Etymologically

Etymology and origin of the Latin word publicum

Confidence
Established
Formation
Derivation
First attested
c. 250–184 BC, Plautus
Ultimate origin
Latin (populus)

Forms

pūblicum n (genitive pūblicī); second declension[1] The Senatus consultum de Bacchanalibus has the old ablative poplicod, “in public”.[2][3]

Etymology

It is the neuter of pūblicus (“of the people, public”), used as a noun.[2][1] De Vaan explains that the adjective was originally ⟨*popliko-⟩, formed from populus (“people”), as the Old Latin spellings ⟨poplicod⟩ and ⟨poblicai⟩ show; its ⟨ū⟩ came from pūbēs (“adult”), with which it was later associated.[3]

Earliest recorded meaning

Plautus, Trinummus, of people who hold everything alike, sacrum profānum, pūblicum prīvātum, “sacred and profane, public and private”.[2][4]

Semantic evolution

Pūblicum is public property, with in pūblicum “into public ownership”, public land, and in pūblicō “in state custody” (Cicero).[2] It is the public purse (Plautus: rapere cupiō pūblicum, “I want to rob the treasury”), state revenue, and the farming of taxes and public works under contract.[2][1] It also means the public interest and, in the plural, public affairs (Seneca).[2] As the parts of a town open to all, it gives in pūblicō “in public, in the open”: Cicero says Clodius stayed out of the senate and out of public places.[2] Wiktionary adds the public road, the public at large and the commonwealth;[1] Köbler records it again in Gregory of Tours.[4]

Timeline

  • c. 250–184 BC – Plautus of public property and the public purse.[2][4]
  • 81–43 BC – Cicero: in pūblicō of custody and of public places.[2][4]
  • 538/539–594 AD – Gregory of Tours uses it.[4]

Meanings

Noun

  1. Public property, state property; public land.[2][1]
  2. The public purse, treasury; state revenue.[2][1]
  3. The public interest;[2] (plural) public affairs.[2]
  4. A contract for collecting taxes or doing public works.[2]
  5. Public places;[2][1] in pūblicō, in public; a public road.[2][1]
  6. The public; publicity; the commonwealth.[2][1]

References

  1. ^ a b c d e f g h i Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p q Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  4. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
Cite this entry

“Publicum.” Etymologically, 18 Oct. 2026, etymologically.com/la/publicum. Accessed 19 Oct. 2026.

Last edited on . ·