Etymologically

Etymology and origin of the Latin word obesitas

Confidence
Established
Formation
Derivation
First attested
1st century AD, Columella
Ultimate origin
Latin obēsus
Etymology tree
inherited borrowed derived
Latin edo
Latin obedo
Latin obesus
Latin obesitas
From the same root
Latin adedo ← edo
Latin comedo ← edo
Latin edax ← edo
Latin editor ← edo
Latin editus ← edo
Latin esurio ← edo
Latin exedo ← edo
Latin peredo ← edo

Pronunciation

  • Classical: [ɔˈbeː.sɪ.taːs][1]
  • Ecclesiastical: [oˈbɛː.s̬i.tas][1]

Forms

obēsitās f (genitive obēsitātis); third declension[1]

Etymology

It is from Latin obēsus (“fat”) + -tās.[2][1] The adjective obēsus was the participle of obedō, from ob- and edō1 (“to eat”).[2]

Earliest recorded meaning

The TLL's first example is Columella, who speaks of the excessive fat of cows' bodies.[3][4]

Semantic evolution

Lewis & Short class it as post-Augustan.[5] It meant the fatness or corpulence of people and animals, as in Suetonius' “fatness of the belly”,[5][2][6] and Pliny the Elder used it of trees that suffer from too much sap.[5][3][7] English took it in the 1610s as obesity, from French and directly from Latin.[8]

Timeline

  • 1st century AD – Columella writes of the excessive fat of cows.[3][4]
  • 23/24–79 AD – Pliny the Elder uses it of trees full of resin.[3][5][4]
  • c. 75–c. 150 AD – Suetonius uses it of a belly.[5][6][4]
  • 1610s – Borrowed into English as obesity.[8]

Meanings

Noun

  1. Fatness, stoutness, obesity.[2][5]
  2. (of trees) Excessive bulk or sappiness.[5][7]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ a b c d e f g Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ a b Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  7. ^ a b Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  8. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Cite this entry

“Obesitas.” Etymologically, 24 Oct. 2026, etymologically.com/la/obesitas. Accessed 24 Oct. 2026.

Last edited on . ·