Etymologically

thesaurarius

Etymology and origin of the Latin word thesaurarius

Confidence
Established
Formation
Derivation
First attested
c. 250–184 BC, Plautus
Ultimate origin
Latin thēsaurus
Etymology tree
inherited borrowed derived
Ancient Greek θησαυρός
Latin thesaurus
Italian tesoro
English thesaurus
French trésor
Latin thesaurarius
From the same root
Latin thesauraria ← thesaurarius

Forms

thēsaurārius (feminine thēsaurāria, neuter thēsaurārium); first/second-declension adjective[1] Also spelled thēnsaurārius.[1][2] Medieval spellings include tēszaurārius, thēsorārius and trēserārius.[3]

Etymology

It is from Latin thēsaurus (“treasure”) + -ārius.[1][4][3]

Earliest recorded meaning

Plautus has it in the Aulularia, in the phrase fures thesaurarii, “treasure thieves”.[1][4][5]

Semantic evolution

In Classical Latin it is a rare adjective meaning “of treasure”.[1][4] In Late Latin it became a noun for a treasurer, a keeper of a treasury, in Venantius Fortunatus and the letters of Isidore of Seville,[2][5] and the neuter thēsaurārium was used for treasure in Cassiodorus[4] and for a strongbox in Augustine.[6]

Medieval Latin used the noun for the treasurer of a king or of a church;[7][8] Du Cange cites Desiderius, treasurer of King Dagobert.[8] British sources also have the adjective for what contains treasure or is itself precious.[9] It lived on in Neo-Latin, where Ramminger quotes a treasurer of the Empire.[10] Köbler traces Middle Low German tesaurāriære to it.[3]

Timeline

  • c. 250–184 BC – Plautus speaks of “treasure thieves”.[1][3]
  • c. 485–c. 580 AD – Cassiodorus uses the neuter for treasure.[4][3]
  • 536–c. 610 AD – Venantius Fortunatus uses it for a treasurer.[2][5][3]
  • c. 560–636 AD – Isidore of Seville uses it for a treasurer in his letters.[2][11][3]

Meanings

Adjective

  1. Of or concerned with treasure.[1][4]
  2. (Medieval Latin) Containing treasure; precious.[9]

Noun

  1. (Late Latin) A treasurer, keeper of a treasury.[2][11][5]
  2. (Medieval Latin) The treasurer of a king, a church or another body.[7][8]

Usage notes

The neuter thēsaurārium was used as a noun in Late Latin, for treasure or for a strongbox.[4][6]

References

  1. ^ a b c d e f g Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  2. ^ a b c d e Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  3. ^ a b c d e f g Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  4. ^ a b c d e f g Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  5. ^ a b c d Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  6. ^ a b VoLat: Vocabolario della Lingua Latina (2018), Milan: Hoepli
  7. ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  8. ^ 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
  9. ^ 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
  10. ^ Ramminger, Johann, Neulateinische Wortliste: Ein Wörterbuch des Lateinischen von Petrarca bis 1700, www.neulatein.de
  11. ^ a b Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.

Derived terms

Cite this entry

“Thesaurarius.” Etymologically, 24 Oct. 2026, etymologically.com/la/thesaurarius. Accessed 24 Oct. 2026.

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