Etymologically

Etymology and origin of the French word noyau

Confidence
Disputed
Formation
Inherited
First attested
1200s early 13th century, Sermons poitevins More words from the 12th century
Inherited from
Latin nucalis via Old French
Ultimate origin
Latin nux

Pronunciation

Forms

noyau m (plural noyaux)[1] Old French noiel and noiaus; the spelling noyau is recorded in 1530.[2][3][4]

Etymology

It is inherited from Old French noiel, inherited from Late Latin nucālis (“nut-sized, like a nut”), an adjective derived from nux (“nut”) that was used as a noun for a fruit stone in Vulgar Latin.[5][2][6][7] Old Occitan nogalh is the same word with another suffix.[5][2][8]

The FEW, the Grand Robert, the GLLF and Picoche derive it instead from Vulgar Latin *nōdellus (“little knot”), a diminutive of nōdus (“knot”).[9][4][3][10] Bloch and Wartburg and Littré keep the two apart: Old French also had noel (“button, knob”) from that Latin diminutive, which was soon confused with the word for the stone, and Provençal nouzeu still means both “joint” and “stone”.[6][8] Wiktionary gives both etyma and takes the modern form from the old plural noiaus.[1] The English word newel comes from the Old French word.[11]

Earliest recorded meaning

In the early 13th century the Sermons poitevins use it for the hard central part of a fruit; in 1277 Rutebeuf writes le noiel laissiez por l'escrasche “you leave the kernel for the shell”.[5]

Semantic evolution

From the fruit stone came eau de noyau (1721), a liqueur made from apricot kernels, shortened to noyau (1922).[5][2] By analogy, from the 15th century the word named a compact central part: the newel of a spiral staircase (1475), the core of a casting mould (1660) and the inner mass of a construction (1690).[5][2]

The sciences took it up from the mid-18th century: the nucleus of a comet (Buffon, 1749), the bright part of sunspots (1765), the core of the Earth (Marat, 1791), a nodule in medicine (1847), the nucleus of the cell (1855), the core of a coil in electricity (1890) and, after the English word nucleus used by Rutherford in 1912, the nucleus of the atom.[5][2] Linguists use it for the minimal unit of a basic sentence (1966).[5][2]

Of people, noyau meant a group that gives life to a larger whole (before 1781), a small group from which a larger one grew (1794) and a small group working against the body around it (Michelet, 1844), the sense behind noyauter (1920).[5][2]

Timeline

  • early 13th century – The Sermons poitevins use noiel for a fruit stone.[5]
  • 1475 – It names the newel of a spiral staircase.[5][2]
  • 1530 – The spelling noyau is recorded.[2][4]
  • 1660 – It names the core of a casting mould.[5]
  • 1721 – The Dictionnaire de Trévoux records eau de noyau.[5][3]
  • 1749 – Buffon speaks of the nucleus of a comet.[5][2]
  • 1794 – It is used for a small founding group of people.[5][12]
  • 1855 – It names the nucleus of the cell.[5]
  • 1920 – Noyauter and noyautage appear at the Congress of Tours.[5][2]
  • 1926 – It names the nucleus of the atom.[5]

Meanings

Noun

  1. The stone or pit of a fruit, the hard woody part enclosing the kernel: les fruits à noyau.[7][5]
  2. A liqueur made from fruit kernels, also eau de noyau, crème de noyau.[7][5]
  3. (biology) The nucleus of a cell.[7][1]
  4. (physics) The nucleus of an atom.[7][1]
  5. (astronomy, geology) The central part of a comet or a galaxy; the core of the Earth.[7][1]
  6. (architecture) The central pillar of a spiral staircase, the newel; the inner core of a structure.[7][5]
  7. (technical) The solid part inside a mould that leaves a hollow in the casting; the iron core of a coil.[7][5]
  8. (computing) The kernel of an operating system.[1]
  9. (linguistics) The nucleus of a syllable or of a basic sentence.[1][2]
  10. A small group of people at the centre of a larger one, or working within a hostile body, a cell.[7][5][1]

Word family

  • noyautage
  • noyauter
  • dénoyauter

Usage notes

Rembourré avec des noyaux de pêche is said in familiar speech of a very hard, uncomfortable seat or mattress.[7][2]

References

  1. ^ a b c d e f g h i Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  3. ^ a b c Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  4. ^ a b c Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  5. ^ a b c d e f g h i j k l m n o p q r s t u v 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
  6. ^ a b Bloch, Oscar; Wartburg, Walther von (1989), Dictionnaire étymologique de la langue française, 8th ed., Paris: Presses universitaires de France
  7. ^ a b c d e f g h i j Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  8. ^ a b Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  9. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 7, 168a
  10. ^ Picoche, Jacqueline (1991), Dictionnaire étymologique du français, Paris: Le Robert (Les Usuels du Robert)
  11. ^ Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  12. ^ Quemada, Bernard, ed. (1959–2006), Datations et documents lexicographiques (Base historique du vocabulaire français, BHVF), Paris: Klincksieck / CNRS / Champion; ATILF

Related etymologies

Cite this entry

“Noyau.” Etymologically, 14 Nov. 2026, etymologically.com/fr/noyau. Accessed 15 Nov. 2026.

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