Etymologically

Etymology and origin of the Latin word quincunx

Confidence
Established
Formation
Compound
First attested
c. 50 BC, Caesar
Ultimate origin
Latin quīnque,ūncia
Etymology tree
inherited borrowed derived
Latin quinque
Italian cinque
Latin quincunx
Derived words
Latin quindecim ← quinque
Latin quinqueremis ← quinque

Pronunciation

  • Classical: [ˈkʷiːŋ.kuːŋks], [ˈkʷiːŋ.kʊŋks][1]
  • Ecclesiastical: [ˈkʷiŋ.kuŋks], [ˈkʷiŋ.kuŋks][1]

Forms

quīncū̆nx m (genitive quīncū̆ncis); third declension[1]

Etymology

It is from Latin quīnque (“five”) + ūncia (“twelfth part”), literally “five twelfths”.[2][3][1] De Vaan explains it as quīnqu- with ūncia;[3] the numeral goes back to Proto-Italic *kwenkwe (“five”) and Proto-Indo-European *penkwe (“five”).[3] Wiktionary connects the name with a Republican bronze coin worth five twelfths of an as that bore five dots.[1]

Earliest recorded meaning

Köbler dates it from Caesar,[4] who in the Gallic War describes pits dug in slanting rows arranged in quincuncem, like the five on a die.[2]

Semantic evolution

Its basic sense is five twelfths of an as:[2][5] Horace has schoolboys taught to divide the as, asking what is left when an ounce is taken from a quincunx.[2][6] It was also five twelfths of a pound in weight and of a iūgerum in land, both in Columella,[2] five cyathi of a sextārius in Martial,[2] and five twelfths of an inheritance in Pliny the Younger.[7][8] As a rate of interest it was five twelfths of one per cent a month, five per cent a year, as in Persius.[2][6]

The arrangement of five points like the five on a die gave a name to rows of trees planted that way,[2] and Caesar uses it of pits set out in this pattern.[2] British medieval writers used it for five ounces and, in heraldry, for the quincunx figure.[9] English quincunx was borrowed in the 1640s, first in astrology.[10]

Timeline

  • c. 50 BC – Caesar uses it of pits dug in a five-point pattern.[2][4]
  • 65–8 BC – Horace uses it of five twelfths of an as.[2][4]
  • 1st century AD – Columella uses it of weight and land measure.[2][4]
  • 34–62 AD – Persius uses it of interest at five per cent.[2][4]
  • 1640s – Borrowed into English as quincunx.[10]

Meanings

Noun

  1. Five twelfths of an as.[2][5]
  2. Five twelfths of a pound (in weight), of a sextārius (five cyathi), or of a iūgerum.[2][8]
  3. Five twelfths of anything, such as an inheritance.[2][7]
  4. Interest at five twelfths of one per cent a month, five per cent a year.[2][6]
  5. An arrangement of five points like the five on a die, especially of trees; a quincunx.[2][5]

Word family

  • quincunciālis

References

  1. ^ a b c d e 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 Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c 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 Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ a b c Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ a b c Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  7. ^ a b Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  8. ^ a b Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  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
  10. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Cite this entry

“Quincunx.” Etymologically, 20 Oct. 2026, etymologically.com/la/quincunx. Accessed 22 Oct. 2026.

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