Etymologically

Etymology and origin of the French word moellon

Confidence
Probable
Formation
Inherited
First attested
1100s late 12th century, Robert le Diable More words from the 11th century
Inherited from
Latin *mutulio via Old French
Ultimate origin
Latin mutulus

Pronunciation

Forms

moellon m (plural moellons)[1] Old French moilon, moillon and moulon, Middle French moiron; the spelling moellon dates from 1504.[2][3][4] The Académie noted in 1694 that some wrote moilon.[5]

Etymology

It is inherited from Old French moilon, inherited from Vulgar Latin *mutuliō, an altered form of mutulus (“mutule, a corbel or bracket in architecture”).[2][6][3][7][1] The spelling with ⟨oe⟩ is a reshaping after moelle (marrow), by popular etymology.[2][3][6] Rey adds that the Latin architectural term may have been borrowed from Etruscan.[6]

The Robert dictionaries give another origin, from Vulgar Latin *modiolō, from modiolus (“hub”).[8][4] Littré thought the origin uncertain and recorded older guesses: Palissy derived it from the word for marrow because the stone is soft, and Grandgagnage from the Walloon verb môieler (“to fill with stones”).[9]

Wiktionary compares Italian modiglione and Spanish mojón, and makes it a doublet of modillon, taken from Italian.[1]

Earliest recorded meaning

Old French moillon first meant a big piece of bread (late 12th century, Robert le Diable).[2][6] About 1200 Graindor de Douai's Chanson de Jérusalem uses it for building stone: Qui portent cailloux bis et quarrax et moilon (“who carry grey pebbles and squared stones and rubble”).[2]

Semantic evolution

As a building word it has meant a cut stone since about 1200, and by analogy a parpaing.[6] Middle French accounts use moillon for small stone used, for example, in earthworks and roadways (Mons, 1336).[10] Palissy explained in the 16th century that the soft stones of the Paris quarries were called moilons.[9] The Académie in 1694 defined it as a piece of rough stone from the quarry, above the freestone, used for foundations and walls.[5]

In mirror-making it was used by analogy for the stone used to polish glass (1752).[2][6] In geology it names a stone of a size between a block and a pebble.[4]

Timeline

  • late 12th century – Moillon “big piece of bread” in Robert le Diable.[2]
  • c. 1200 – Graindor de Douai uses moilon for building stone.[2][6]
  • 1336 – Moillon appears in the accounts of Mons.[10]
  • 1387 – The derivative moilonneur is recorded.[6]
  • 1504 – The spelling moellon appears in the accounts of the château of Gaillon.[2][6]
  • 1694 – The Académie records moellon, noting the spelling moilon.[5]
  • 1752 – The Trévoux dictionary records the sense “stone for polishing glass”.[2]

Meanings

Noun

  1. (building) A rubblestone, a building stone of handy size and weight, used in the body of walls and usually covered with plaster or mortar: un mur de moellons.[4][2][1]
  2. (geology) A stone of a size between a block and a pebble.[4]
  3. (glassmaking) A stone for polishing mirror glass.[2]

Word family

  • moellonnage
  • mutule
  • modillon

Usage notes

The GLLF has a separate noun moellon, the oily by-product of chamoisage (chamois tanning), recorded in 1874, an alteration under the influence of moelle of moleau (1812), from mol, the old form of mou.[11]

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l Trésor de la langue française informatisé (2004), ATILF – CNRS & Université de Lorraine, atilf.fr/tlfi; electronic version of Imbs, Paul; Quemada, Bernard, eds. (1971–1994), Trésor de la langue française, Paris: CNRS / Gallimard
  3. ^ a b c Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  4. ^ a b c d e Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  5. ^ a b c Académie française (1694), Le Dictionnaire de l'Académie françoise, 1st ed., Paris: Coignard
  6. ^ a b c d e f g h i Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  7. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 6/3, 306b
  8. ^ Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  9. ^ a b Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  10. ^ a b Dictionnaire du Moyen Français, version 2015 (DMF 2015), ATILF – CNRS & Université de Lorraine, atilf.fr/dmf
  11. ^ Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse

Related etymologies

Cite this entry

“Moellon.” Etymologically, 14 Nov. 2026, etymologically.com/fr/moellon. Accessed 15 Nov. 2026.

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