Etymologically

Etymology and origin of the Latin word modius

Confidence
Probable
Formation
Derivation
First attested
c. 250–184 BC, Plautus
Ultimate origin
Proto-Indo-European (*med-o-)

Forms

modius m (genitive modiī or modī); second declension[1] Cato has a neuter modium, plural modia;[2][3] the genitive plural is often modium, as in Varro, Cicero and Caesar.[2][3]

Etymology

It is formed from modus (“measure”) with the suffix -ius, perhaps with a word for “vessel” understood.[2][4][1] The TLL compares Greek μέδιμνος (médimnos, “medimnus, a grain measure”).[4] De Vaan traces ⟨modus⟩ to Proto-Italic *medo- (“measure, judgement”) and Proto-Indo-European *med-o- (“measure”), cognate with Umbrian meřs (“law”).[5]

Isidore of Seville said it is so called because it is complete in its own measure.[4]

Earliest recorded meaning

Köbler gives Plautus,[6] who has a genitive plural modiōrum in the Miles gloriosus;[3] an early law on public weights and measures fixes sixteen pounds to the modius.[2]

Semantic evolution

It is a measuring vessel of standard size, as in the law that punishes anyone who makes the public weights, measures and vessels smaller or larger, and figuratively plēnō modiō, in full measure.[2][1] Above all it is the Roman dry measure, especially for grain, of sixteen sextāriī or a sixth of a medimnus, about a peck or nine litres.[2][1]

Church Latin glosses it “bushel, peck, measure”.[7] In medieval Latin it is also a land measure, the area sown with a modius of grain.[8] Köbler finds it in the capitularies, councils, charters and many law codes.[6]

Timeline

  • c. 250–184 BC – Plautus.[3][6]
  • 234–149 BC – Cato has the neuter modium.[2][6]
  • 81–43 BC – Cicero of grain measured in modiī.[2][6]
  • c. 560–636 AD – Isidore of Seville explains it from modus.[4][6]

Meanings

Noun

  1. A measuring vessel of standard size;[2] plēnō modiō, in full measure.[2]
  2. The modius, a Roman dry measure of sixteen sextarii, about a peck;[2][1][7] a bushel.[7]
  3. (Medieval Latin) A land measure, the area sown with a modius of grain.[8]

Word family

  • modiālis
  • modiatio
  • modiolum
  • modiolus
  • sēmodius
  • trimodius
  • decemmodius
  • sēsquimodius

Usage notes

Modius is also a Roman family name.[1]

References

  1. ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  4. ^ a b c d Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  5. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  6. ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  7. ^ a b c Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  8. ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
Cite this entry

“Modius.” Etymologically, 19 Oct. 2026, etymologically.com/la/modius. Accessed 19 Oct. 2026.

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