Etymologically

senatorius

Etymology and origin of the Latin word senatorius

Confidence
Established
Formation
Derivation
First attested
81–43 BC, Cicero
Ultimate origin
Proto-Indo-European (*sen-)

Pronunciation

  • Classical: [sɛ.naːˈtoː.ri.ʊs][1]
  • Ecclesiastical: [se.naˈtɔː.ri.us][1]

Forms

senātōrius (feminine senātōria, neuter senātōrium); first/second-declension adjective[1]

Etymology

It is formed from senātor (“senator”) with the suffix -ius.[2][1] ⟨Senātor⟩ belongs to senātus (“senate”) and ultimately to senex (“old man”),[1][3] which de Vaan traces to Proto-Italic *seno- (“old”) and Proto-Indo-European *sen-o- (“old”), cognate with Old Irish sen (“old”), Sanskrit सन (sána-, “old”) and Lithuanian sẽnas (“old”).[4]

Earliest recorded meaning

Köbler gives Cicero as its first author,[3] who speaks of a man whose age was far from “senatorial rank” (senātōrius gradus).[5]

Semantic evolution

It is “of or proper to a senator”, as the ōrdō senātōrius, the senatorial order, in Cicero, Caesar and Sallust.[2][5] The masculine is used as a noun for a man of senatorial rank, as in the letters to Caesar ascribed to Sallust: “nobles with a few senators did whatever they pleased”.[2][3]

In Church Latin the masculine noun is a senator and the neuter a reserved section.[6]

Timeline

  • 81–43 BC – Cicero of senatorial rank.[5][3]
  • c. 50 BC – Caesar of the senatorial order.[5][3]

Meanings

Adjective

  1. Of a senator, senatorial, ōrdō senātōrius, the senatorial order.[2][1][5]

Noun

  1. (masculine) A man of senatorial rank.[2][6]
  2. (Ecclesiastical Latin, neuter) A reserved section.[6]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  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. ^ a b c Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
Cite this entry

“Senatorius.” Etymologically, 19 Oct. 2026, etymologically.com/la/senatorius. Accessed 19 Oct. 2026.

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