Etymologically

πλακοῦς

Etymology and origin of the Ancient Greek word πλακοῦς

Confidence
Established
Formation
Derivation
First attested
400s BC Aristophanes, Acharnians More words from the 5th century BC
Ultimate origin
Ancient Greek πλάξ
Etymology tree
inherited borrowed derived
Ancient Greek πλάξ (pláx)
Ancient Greek πλακόεις (plakóeis)
Ancient Greek πλακοῦς (plakoûs)

Pronunciation

  • 5th-century BC Attic: /pla.kûːs/[1]
  • 4th-century AD Koine: /plaˈkus/[1]
  • 10th-century Byzantine: /plaˈkus/[1]

Forms

πλᾰκοῦς (plakoûs) m (genitive πλᾰκοῦντος); third declension[1] The uncontracted adjective is also used for the cake in a Hellenistic epigram.[2]

Etymology

It is from Ancient Greek πλακόεις (plakóeis, “flat”), contracted and used as a noun.[1][2][3] The adjective is formed from πλάξ (pláx, “flat surface, slab”).[3][4] Beekes derives the noun for slab, apparently, from a root noun Proto-Indo-European *pl̥k-s, and compares Latvian plaka (“low-lying place, plain”) and Old Norse flaga (“thin layer”).[3][5]

Ancient grammarians already explained it this way: the Etymologicum Magnum says that everything spread out flat was called by the word for a slab, whence the adjective and its Attic contraction.[6]

Earliest recorded meaning

It is first found in Aristophanes, in the Acharnians and other plays, for a cake.[7][2][8]

Semantic evolution

The word was common in comedy for a flat cake.[2][8][3] Such cakes were made of fine meal, water, milk or fat, and came in many regional varieties, of which Athenaeus gives long lists.[9][2] They were also offerings: the magical papyri tell the reader to make seven of them.[10] Because of its shape the word also named the seed of the mallow, which children called “cheeses”.[2][11]

Latin borrowed it as placenta (“a flat cake”);[3][12] Etymonline and Triantafyllidis trace the Latin form to the accusative πλακόεντα, while Beekes calls the phonetic details unclear.[13][14][3] In the 16th century the Italian anatomist Realdo Colombo named the organ attaching the fetus to the womb placenta uterina, “uterine cake”, from its shape, whence English placenta.[13] Modern Greek πλακούντας (plakoúntas) is a learned revival: it means a sweet cake, and in anatomy the placenta, a sense taken from French.[14][15]

Timeline

  • 5th–4th century BC – Aristophanes uses it often for a flat cake.[2][8][16]
  • 2nd–3rd century AD – Athenaeus lists many kinds of cake under this name.[2][9][16]
  • 16th century – The Italian anatomist Realdo Colombo names the placenta after the Latin form of this word.[13]
  • 1690s – English uses placenta for the mammalian organ.[13]

Meanings

Noun

  1. A flat cake, often an offering.[2][8][10]
  2. The seed of the mallow.[2][11]

Word family

  • πλακούντιον (plakoúntion)

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 Liddell, Henry George; Scott, Robert; Jones, Henry Stuart (1940), A Greek-English Lexicon, 9th ed., Oxford: Clarendon Press
  3. ^ a b c d e f Beekes, Robert S. P. (2010), Etymological Dictionary of Greek, with the assistance of Lucien van Beek, Leiden Indo-European Etymological Dictionary Series 10, Leiden; Boston: Brill
  4. ^ Liddell, Henry George; Scott, Robert (1889), An Intermediate Greek-English Lexicon, Oxford: Clarendon Press
  5. ^ Frisk, Hjalmar (1960–1972), Griechisches etymologisches Wörterbuch, 3 vols, Heidelberg: Carl Winter
  6. ^ Gaisford, Thomas, ed. (1848), Etymologicum Magnum, Oxford: Oxford University Press
  7. ^ Keersmaekers, Alek (2021–2025), GLAUx: The Greek Language Automated corpus, https://github.com/alekkeersmaekers/glaux
  8. ^ a b c d Diggle, James, et al., eds. (2021), The Cambridge Greek Lexicon, Cambridge: Cambridge University Press
  9. ^ a b Cancik, Hubert; Schneider, Helmuth, eds. (2002–2010), Brill's New Pauly: Encyclopaedia of the Ancient World, Leiden: Brill
  10. ^ a b Muñoz Delgado, Luis (2001), Léxico de magia y religión en los papiros mágicos griegos, Madrid: CSIC
  11. ^ a b Hesychius of Alexandria, Lexicon, ed. Kurt Latte (Α–Ο, Copenhagen 1953–1966) and Moritz Schmidt (Π–Ω, Jena 1858–1868)
  12. ^ Saalfeld, Günther Alexander (1874), Index Graecorum vocabulorum in linguam latinam translatorum, Berlin: Weidmann
  13. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  14. ^ a b Ινστιτούτο Νεοελληνικών Σπουδών (Ίδρυμα Μανόλη Τριανταφυλλίδη) (1998), Λεξικό της κοινής νεοελληνικής, Thessaloniki: Aristotle University of Thessaloniki
  15. ^ Babiniotis, Georgios (2010), Ετυμολογικό λεξικό της νέας ελληνικής γλώσσας [Etymological Dictionary of Modern Greek], Athens: Κέντρο Λεξικολογίας
  16. ^ a b Rodríguez Adrados, Francisco, et al., eds. (1980–), Diccionario Griego-Español, Madrid: CSIC, http://dge.cchs.csic.es/xdge
Cite this entry

“Πλακοῦς.” Etymologically, 13 Nov. 2026, etymologically.com/grc/%CF%80%CE%BB%CE%B1%CE%BA%CE%BF%E1%BF%A6%CF%82. Accessed 14 Nov. 2026.

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