Etymologically
Log in

ῥύαξ

This is the current revision of this entry, as edited by bogdan on 30 October 2026 at 15:31. This address is a permanent link to this version.
Changes in this edit History

Pronunciation

  • 5th-century BC Attic: /r̥ý.aːks/[1]
  • 4th-century AD Koine: /ˈry.aks/[1]
  • 10th-century Byzantine: /ˈry.aks/[1]

Forms

ῥῠ́ᾱξ (rhúāx) m (genitive ῥῠ́ᾱκος); third declension[1]

Etymology

It is a noun from Ancient Greek ῥέω (rhéō, “to flow”), formed with the suffix -αξ (-ax).[2][3][4] Beekes, following Björck, takes it to be probably a Sicilian word.[2] Hesychius records a related ῥύαγξ (rhúanx), glossed “cleft, chasm”, and Laconian has ῥυάχετος (rhuákhetos, “crowd of people”), which Beekes explains as an expressive enlargement of ῥύαξ, perhaps after ὀχετός (okhetós, “channel”).[2]

Earliest recorded meaning

It is first found in Thucydides (5th century BC)[5] in two senses: a rushing stream or gully, and the stream of lava that flowed from Etna.[3][6]

Semantic evolution

Plato uses it of the streams of lava, and the orator Lycurgus of a stream of fire.[3][6] Aristotle calls ῥύακες the two ducts through which the milk of dolphins and similar animals flows.[3] Diodorus Siculus uses it figuratively, of a stream of silver, and the physician Dioscorides of a mountain torrent.[3]

It was borrowed as Latin rhyax.[1] In medieval Greek the diminutive ρυάκιον (ryákion) appears beside it,[7][4] and the ancient noun is still recorded in the vernacular literature of 1100–1669.[8] The diminutive survives as Modern Greek ρυάκι (ryáki), a small stream of water.[7]

Timeline

  • 5th century BC – Thucydides uses it of a mountain torrent and of a stream of lava from Etna.[3][6][5]
  • 5th–4th century BC – Plato uses it of streams of lava.[3][5]
  • 4th century BC – Aristotle uses it of the milk ducts of dolphins.[3][5]
  • 1st century BC – Diodorus Siculus speaks figuratively of a stream of silver.[3][5]
  • 1st century AD – Dioscorides uses it of a mountain torrent.[3][5]
  • Middle Ages – The diminutive ρυάκιον comes into use.[7][4]
  • Modern Greek – The diminutive survives as ρυάκι (ryáki), a brook.[7]

Meanings

Noun

  1. A rushing stream, mountain torrent; a gully cut by water.[3][6]
  2. A stream of lava from a volcano.[3][6]
  3. (figurative) A stream, flood (of silver).[3]
  4. (zoology) A duct through which milk flows, in dolphins and similar animals.[3]
  • ῥέω (rhéō)
  • Modern Greek ρυάκι (ryáki)
  • Latin rhyax

Usage notes

Hesychius glosses ῥύαξ as “helmet” and “tower”, meanings found in no other source.[9]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c 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
  3. ^ a b c d e f g h i j k l m n Liddell, Henry George; Scott, Robert; Jones, Henry Stuart (1940), A Greek-English Lexicon, 9th ed., Oxford: Clarendon Press
  4. ^ a b c Babiniotis, Georgios (2010), Ετυμολογικό λεξικό της νέας ελληνικής γλώσσας [Etymological Dictionary of Modern Greek], Athens: Κέντρο Λεξικολογίας
  5. ^ a b c d e f Rodríguez Adrados, Francisco, et al., eds. (1980–), Diccionario Griego-Español, Madrid: CSIC, http://dge.cchs.csic.es/xdge
  6. ^ a b c d e Diggle, James, et al., eds. (2021), The Cambridge Greek Lexicon, Cambridge: Cambridge University Press
  7. ^ a b c d Ινστιτούτο Νεοελληνικών Σπουδών (Ίδρυμα Μανόλη Τριανταφυλλίδη) (1998), Λεξικό της κοινής νεοελληνικής, Thessaloniki: Aristotle University of Thessaloniki
  8. ^ Kriaras, Emmanuel, Επιτομή του Λεξικού της μεσαιωνικής ελληνικής δημώδους γραμματείας 1100–1669, Κέντρο Ελληνικής Γλώσσας, https://www.greek-language.gr
  9. ^ Hesychius of Alexandria, Lexicon, ed. Kurt Latte (Α–Ο, Copenhagen 1953–1966) and Moritz Schmidt (Π–Ω, Jena 1858–1868)