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pediculus

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Etymology and origin of the Latin word pediculus

pediculus1 little foot, stalk

Confidence
Established
Formation
Derivation
First attested
234–149 BC Cato
Ultimate origin
Latin pēs
Etymology tree of pediculus1
inherited borrowed derived
Proto-Indo-European *pṓds
Ancient Greek πούς (poús)
Latin pēs
French pied
Italian piede
Spanish pie
Latin pedīculus
From the same root · pediculus1
Ancient Greek πόδιον (pódion) ← πούς
Ancient Greek πολύπους (polúpous) ← πούς
Ancient Greek τρίπους (trípous) ← πούς
English octopus ← πούς
Latin ālipēs ← pēs
Latin bipedālis ← pēs
Latin bipēs ← pēs
Latin cornipes ← pēs
Latin decempeda ← pēs
Latin expediō ← pēs
Latin impediō ← pēs
Latin pedālis ← pēs
Latin pedēs ← pēs
Latin pedetemptim ← pēs
Latin pedica ← pēs
Latin pedō ← pēs
Latin quadrupes ← pēs
Latin semipes ← pēs
Latin sonipēs ← pēs

Pronunciation

  • Classical: [pɛˈdɪ.kʊ.ɫʊs][1]
  • Ecclesiastical: [peˈdiː.ku.lus][1]

Forms

pediculus m (genitive pediculī); second declension[1]

Etymology

The word for the little foot is from Latin pēs (“foot”) + -culus.[2][1] pēs goes back to Proto-Italic *pōd- and Proto-Indo-European *pōd-s (“foot”).[3]

Earliest recorded meaning

The first record is in Cato's treatise on agriculture, of the stalk of a fruit: he lists dark Tellanian figs “with a long stalk” (pediculo longo).[2][4]

Semantic evolution

Pliny the Elder uses it in the literal sense, for the eight little feet of marine creatures;[2][5] the Digest mentions silver pediculi, small feet of a piece of furniture or plate.[5] In botany it named the footstalk of a fruit or leaf: Columella speaks of the stalks of pomegranates and of grapes, and Pliny of the short stalk of olive leaves.[5][2] English took pedicle in the 1620s from French or directly from this word.[6]

Timeline

  • 234–149 BC – Cato speaks of figs with a long stalk.[2][4]
  • 1st century AD – Columella uses it for the stalks of pomegranates and grapes.[5][4]
  • 23/24–79 AD – Pliny the Elder uses it for the little feet of marine creatures.[2][4]
  • 1620s – English borrows pedicle, from French or directly from Latin.[6]

Meanings

Noun

  1. A little foot.[2][5]
  2. (botany) A footstalk, pedicle: the stalk of a fruit or leaf.[2][5]

pediculus2 louse

Confidence
Established
Formation
Derivation
First attested
14–37 Celsus
Ultimate origin
Latin pēdis
Etymology tree of pediculus2
inherited borrowed derived
Latin pēdis
Latin pedīculus

Forms

pēdiculus m (genitive pēdiculī); second declension[1] Also spelled pēduculus and pēduclus.[2] Manuscripts written before the 9th century mostly have the spelling peducul-.[7]

Etymology

The word for the louse is from Latin pēdis (“louse”) + -culus.[2][1][7] pēdis goes back to Proto-Italic *pezd- and Proto-Indo-European *pesd- (“annoying insect”); de Vaan relates it to Avestan pazdu- (“beetle, maggot”), and finds an explanation as “one who eats away” unspecific and unconvincing.[3] Ancient grammarians derived the name of the louse from pēs (“foot”).[7]

Earliest recorded meaning

It appears in the 1st century AD, in Celsus, who describes lice that grow among the eyelashes, a condition the Greeks called φθειρίασις,[2][5][4] and in Columella, who has a bird's feathers cleaned so that it does not breed lice.[2]

Semantic evolution

Pliny the Elder names remedies that drive lice from the whole body,[2] uses the word for a sea louse,[2] and reports that some called certain earth beetles pediculi terrae.[2][5] Petronius has the proverb in alio pediculum vides, in te ricinum non vides, “you see a louse on someone else but not the tick on yourself”.[2]

The word stayed in use through Medieval Latin: Ælfric's Old English glossary renders it lus, and a letter of John of Salisbury of 1171 describes a martyr's body found in a hair shirt full of lice and worms.[8] English formed pediculosis “infestation with lice” from it in 1809.[6]

Timeline

  • 14–37 AD – Celsus describes lice among the eyelashes.[2][4]
  • 1st century AD – Columella mentions birds breeding lice.[2][4]
  • 23/24–79 AD – Pliny the Elder uses it for a sea louse.[2][4]
  • before 66 AD – Petronius quotes the proverb of the louse and the tick.[2][4]
  • 1171 – John of Salisbury writes of a hair shirt full of lice.[8]
  • 1809 – English forms pediculosis from it.[6]

Meanings

Noun

  1. A louse.[2][5]
  2. A sea louse.[2]
  3. pediculi terrae: a name for certain earth beetles.[2][5]

Word family

  • pēdiculōsus
  • pēdiculāris
  • pēdiculō
  • pēdicellus

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 l m n o p q r s t u v w Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  4. ^ a b c d e f g h i Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ a b c d e f g h i j Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  7. ^ a b c Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  8. ^ a b 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
Cite this entry

“Pediculus.” Etymologically, 13 Nov. 2026, etymologically.com/la/pediculus. Accessed 14 Nov. 2026.

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