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radial

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Etymology and origin of the French word radial

Confidence
Established
Formation
Derivation
First attested
c. 1370 Guy de Chauliac More words from the 14th century
From
Latin radius
Ultimate origin
Latin radius
Etymology tree
inherited borrowed derived
Latin radius
Catalan raig
French rai
Italian raggio
Italian razzo
Spanish rayo
English radius
Italian radio
French radial
From the same root
French radioactif ← radius
French radioactivité ← radius
French radiothérapie ← radius
Latin radiālis ← radius
Latin radiātus ← radius
Latin radiō ← radius
French rayon ← rai
English radial ← radius

Forms

radial (feminine radiale, masculine plural radiaux, feminine plural radiales)[1] The feminine radiale is used as a noun for the radial artery (1805) and for a radial road (1941); the masculine as a noun names a muscle of the forearm (1690).[2][3]

Etymology

It is a learned derivative, from Latin radius (“staff, spoke of a wheel, ray”), with the suffix -al.[2][3][4][5] Bloch and Wartburg note that it was formed directly on the Latin word, before French borrowed the Latin noun itself as the name of the forearm bone (1541).[6] The TLFi compares Medieval Latin radiālis (“relating to a ray”), recorded in 1267, and Littré takes the word from this Latin adjective.[2][7]

The DHLF treats the physics sense of the 17th century as a fresh formation on the Latin noun in its sense of a ray, made separately from the anatomical word.[3] The TLFi accordingly has two headwords, one for each sense, and Littré likewise.[2][7] Related learned words from the same Latin noun are radiaire and radié.[3]

Earliest recorded meaning

The first record is in the surgery of Guy de Chauliac, about 1370 (1363 according to the DHLF); the TLFi has the sense “relating to the radius” in its 1478 printing.[2][3] Bloch and Wartburg date the word to 1490.[6]

Semantic evolution

As an anatomical term it qualifies what belongs to the radius of the forearm or the part of the arm along it: artère radiale, nerf radial.[3][8] It was used as a masculine noun for a forearm muscle from 1690, beside the phrase muscle radial, and as a feminine noun for the radial vein (1805) and the radial artery.[2][3]

In 1615 the word was formed again in physics for what concerns rays.[2][3] It was then also said of a crown topped with points or rays, as worn by deified Roman emperors, a sense that survives in heraldry and ancient history but otherwise gave way to rayonné and radié.[3][9] From 1765 it meant “arranged or directed along a radius”, whence vitesse radiale (1898) and champ radial (1963).[3][9] Littré also records geometry and mechanics uses such as courbes radiales and machines radiales.[7]

In town planning the feminine radiale (1941) became a noun for a main road linking the centre of a city with its outskirts, the opposite of a ring road.[2][3][8]

Timeline

  • c. 1370 – First recorded in Guy de Chauliac.[2]
  • 1478 – The printed Chirurgie of Guy de Chauliac uses it for “relating to the radius”.[2][4]
  • 1615 – Used in physics for “relating to rays”, and of a crown with rays.[2][3]
  • 1690 – The masculine noun names a forearm muscle.[2][3]
  • 1765 – The Encyclopédie uses it for “directed along a radius”.[9][3]
  • 1805 – Cuvier uses the feminine noun for the radial vein.[2]
  • 1898 – Vitesse radiale is recorded.[3][8]
  • 1941 – The noun radiale “radial road” appears.[2][3]

Meanings

Adjective

  1. (anatomy) Relating to the radius or to the part of the forearm along it: le nerf radial, l'artère radiale.[8][2][10]
  2. (science, technology) Relating to a radius of a circle, or arranged or acting along a radius: la vitesse radiale, un pneu à carcasse radiale.[8][2][9]
  3. (heraldry, history) Couronne radiale: a crown topped with points or rays.[9][3]

Noun

  1. (feminine) A main road running from the outskirts to the centre of a city, as opposed to a rocade.[8][2][10]
  2. (anatomy, feminine) The radial artery.[2]
  3. (anatomy, masculine) One of the radial muscles of the forearm.[2][7]

Word family

  • radialement

References

  1. ^ 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 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 d e f g h i j k l m n o p q Rey, Alain, ed. (1992), Dictionnaire historique de la langue française, Paris: Le Robert
  4. ^ a b Rey, Alain, ed. (2005), Le Grand Robert de la langue française, electronic version, Paris: Le Robert
  5. ^ Wartburg, Walther von, et al. (1922–2002), Französisches Etymologisches Wörterbuch, 25 vols., Bonn / Leipzig / Basel: Klopp / Teubner / Zbinden, p. 10, 24b
  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 Littré, Émile (1873–1877), Dictionnaire de la langue française, 4 vols. and supplement, Paris: Hachette
  8. ^ a b c d e f Rey-Debove, Josette; Rey, Alain, eds. (2007), Le Petit Robert de la langue française, Paris: Le Robert
  9. ^ a b c d e Guilbert, Louis; Lagane, René; Niobey, Georges, eds. (1971–1978; 1989), Grand Larousse de la langue française, Paris: Larousse
  10. ^ a b Dictionnaire Le Robert en ligne, dictionnaire.lerobert.com (accessed 2024)

Related etymologies

Cite this entry

“Radial.” Etymologically, 15 Nov. 2026, etymologically.com/fr/radial. Accessed 15 Nov. 2026.

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