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lumbricus

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Etymology and origin of the Latin word lumbricus

Confidence
Uncertain
Formation
Derivation
First attested
c. 250–184 BC, Plautus

Pronunciation

  • Classical: [ɫʊmˈbriː.kʊs][1]
  • Ecclesiastical: [lumˈbriː.kus][1]

Forms

lumbrīcus m (genitive lumbrīcī); second declension[1]

Etymology

The origin is uncertain.[2][3][4] The suffix recalls umbilīcus “navel”, also in the lower belly, and formīca “ant”, another small creature.[3][1] Wiktionary connects it with lumbus “loin”.[1] Walde and Hofmann derived it, like that noun, from a root Proto-Indo-European *lndʰ-, but de Vaan objects that a voiced aspirate after a nasal gives a stop in all the Italic languages.[3] Köbler mentions a derivation from *sleidʰ- (“slippery; to slide”).[5]

Earliest recorded meaning

It is found from Plautus on,[3][5] meaning an earthworm: in the Bacchides a character says ab transenna hic turdus lumbricum petit, “here the thrush goes for the worm on the snare”.[2]

Semantic evolution

De Vaan points out that “earthworm” is the older and more frequent sense; when Cato prescribes a remedy for taeniae et lumbrici, the word is used figuratively for worms in the intestines.[3] That sense is common in Columella, Pliny the Elder and the medical writer Caelius Aurelianus,[6] and Pliny remarks that worms have no eyes.[6]

Timeline

  • c. 250–184 BC – Plautus uses it for an earthworm.[2][5]
  • 234–149 BC – Cato uses it for intestinal worms.[2][3][5]
  • 1st century AD – Columella uses it for intestinal worms of animals.[6][5]
  • 23/24–79 AD – Pliny the Elder notes that worms have no eyes.[6][5]

Meanings

Noun

  1. An earthworm.[2][3]
  2. An intestinal worm.[2][6]

References

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

“Lumbricus.” Etymologically, 20 Oct. 2026, etymologically.com/la/lumbricus. Accessed 22 Oct. 2026.

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