Etymologically
Log in

αἰθήρ

This is the current revision of this entry, as edited by bogdan on 24 October 2026 at 20:19. This address is a permanent link to this version.
Changes in this edit History

Pronunciation

  • 5th-century BC Attic: /ai̯.tʰɛ̌ːr/[1]
  • 4th-century AD Koine: /ɛˈθir/[1]
  • 10th-century Byzantine: /eˈθir/[1]

Forms

αἰθήρ (aithḗr) m (genitive αἰθέρος); third declension[1]

Etymology

It is, by general agreement, from Ancient Greek αἴθω (aíthō, “to kindle, burn”), with a suffix in /r/; the ending -ήρ may be modelled on ἀήρ (āḗr, “mist, air”).[2][1][3] The verb continues Proto-Indo-European *h₂eydʰ- (“to kindle, ignite”).[2][4]

Earliest recorded meaning

In Homer it is the bright upper air above the clouds and the mist, the home of Zeus “dwelling in the aither”, and the way between heaven and earth; it can be cloudless or clouded.[5][6]

Semantic evolution

Homer always makes it feminine;[6] Hesiod and Attic prose have it masculine, and the lyric poets and tragedians use both.[6] Hesiod makes Aither a person, the son of Erebos and Night.[7] In the tragedians and philosophers it is the fiery upper element: Anaxagoras equates it with fire, Empedocles uses it of air, an Attic epitaph says “the aither received their souls, the earth their bodies”, as Euripides also says, and the Epinomis and Aristotle make it the fifth element.[6][7] Chrysippus took it for the creative fire of the Stoics, and Philostratus for the divine element in the soul.[6]

It was borrowed as Latin aether.[8] Modern Greek αιθέρας (aithéras) is a learned word for the sky and, through French éther from Latin, for the chemical ether.[9]

Timeline

  • Homer – The Iliad uses it for the upper air, the realm of Zeus.[5][6]
  • Before the 6th century BC – Hesiod personifies Aither as a son of Erebos and Night.[7][3]
  • 5th century BC – Empedocles uses it of air and Anaxagoras of fire; the tragedians use it often.[6][7][3]
  • 4th century BC – Aristotle makes it the fifth element.[6][3]
  • 3rd century BC – Chrysippus identifies it with the Stoics' creative fire.[6][3]
  • Modern Greek – Modern Greek αιθέρας (aithéras) is a learned word for the sky and for the chemical ether.[9]

Meanings

Noun

  1. The bright upper air, the heaven or sky, home of the gods.[6][7][5]
  2. (personified) Aither, son of Erebos and Night; a cosmogonic deity.[7]
  3. The sky as the place of clouds and weather, or of great height.[7]
  4. Air as an element, breathed in or out.[6][7]
  5. (philosophy) The fifth element, the aether; fire.[6]
  6. The divine element in the soul.[6]
  7. A clime or region.[6]

Word family

  • αἰθέριος (aithérios)
  • αἴθρα (aíthrā)
  • αἴθριος (aíthrios)
  • αἶθρος (aîthros)
  • ὑπαίθριος (hupaíthrios)
  • ὕπαιθρος (húpaithros)
  • αἰθερώδης (aitherṓdēs)
  • αἴθρη (aíthrē)

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b 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 Rodríguez Adrados, Francisco, et al., eds. (1980–), Diccionario Griego-Español, Madrid: CSIC, http://dge.cchs.csic.es/xdge
  4. ^ Indo-European Lexicon (after Pokorny), Linguistics Research Center, University of Texas at Austin, https://lrc.la.utexas.edu/lex
  5. ^ a b c Cunliffe, Richard John (1924), A Lexicon of the Homeric Dialect, London: Blackie and Son
  6. ^ 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
  7. ^ a b c d e f g h Diggle, James, et al., eds. (2021), The Cambridge Greek Lexicon, Cambridge: Cambridge University Press
  8. ^ Saalfeld, Günther Alexander (1874), Index Graecorum vocabulorum in linguam latinam translatorum, Berlin: Weidmann
  9. ^ a b Ινστιτούτο Νεοελληνικών Σπουδών (Ίδρυμα Μανόλη Τριανταφυλλίδη) (1998), Λεξικό της κοινής νεοελληνικής, Thessaloniki: Aristotle University of Thessaloniki