Etymologically

densitas

Etymology and origin of the Latin word densitas

Confidence
Established
Formation
Derivation
First attested
Livy
Ultimate origin
Latin (dēnsus)
Etymology tree
inherited borrowed derived
Latin densitas
English density

Forms

dēnsitās f (genitive dēnsitātis); third declension[1]

Etymology

It is from dēnsus “thick, dense” with the suffix -tās.[2][1][3][4]

Earliest recorded meaning

The OLD's earliest citations are from Livy, of thickness and of crowding.[2] Köbler dates Livy 59 BC–17 AD.[5]

Semantic evolution

It meant thickness, density, as Pliny the Elder's mud that thickens into density, and of paper, and in Livy a multitude, crowding together.[2][6][7] Lewis and Short think it perhaps not ante-Augustan.[2][6][7] In Quintilian it meant density of style, frequency.[2][7]

Medieval Latin used it for darkness.[8] British Medieval Latin used it for thick growth, of woods.[9] It survives in Italian densità and French densité, and French gave English density about 1600.[1][4]

Timeline

  • 59 BC–17 AD – Livy uses it of thickness and crowding.[2][5]
  • 23/24–79 AD – Pliny the Elder uses it of mud and paper.[6][5]
  • c. 35–95/96 AD – Quintilian uses it of style.[2][5]
  • c. 1600 – English density is recorded.[4]

Meanings

Noun

  1. Thickness, density.[2]
  2. Multitude, crowding; of style, density.[2]
  3. (Medieval Latin) Darkness.[8]

References

  1. ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  5. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b c Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  7. ^ a b c Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  8. ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  9. ^ 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

Borrowed into

Cite this entry

“Densitas.” Etymologically, 16 Oct. 2026, etymologically.com/la/densitas. Accessed 16 Oct. 2026.

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