Etymologically

Etymology and origin of the Proto-Indo-European word *h₃ekʷ-

Confidence
Established

Reconstruction

LIV and NIL write the root *h₃ekʷ- 'to catch sight of, to consider',[1][2] and Beekes *h₃ekw- 'see'.[3] Sihler writes *H₃ekʷ-.[4]

Morphology

LIV reconstructs a zero-grade i̯é-present *h₃kʷ-i̯é-, a perfect *h₃e-h₃ókʷ/h₃kʷ-, an s-desiderative *h₃ékʷ/h₃kʷ-s- and a reduplicated sé-desiderative *h₃i-h₃kʷ-sé-.[1] They are continued in Greek ὄσσομαι (óssomai), Ancient Greek ὄπωπα (ópōpa) and the future Ancient Greek ὄψομαι (ópsomai), and in Vedic ईक्षते (ī́kṣate, “perceives”), which no longer has a desiderative sense.[1] Beekes calls ὄσσομαι an old yod-present from *h₃kw-ie/o-.[3] LIV adds a root noun *h₃ékʷ- 'eye', mostly in the dual.[1]

Evidence

The verb is found in Greek and Indo-Iranian; the noun 'eye' adds Armenian, Slavic, Baltic and Italic.[1][5] NIL also lists Tocharian and Celtic derivatives.[2] LIV and NIL cite no Anatolian form.[1][2]

Competing analyses

de Vaan thinks the Latin formation oculus is probably not of PIE date, and derives it from the root noun, from a thematic *h₃okw-o- or from an earlier verb.[5] Zair reports Hamp's derivation of British Celtic words for 'face' from *eni-h₃kʷo-, cognate with Sanskrit अनीक (ánīka-, “face, front”).[6]

Meanings

  1. to catch sight of, to consider,[1] to see[3]

In LIV's account the perfect 'has caught sight of' came to mean 'looks at'.[1] Beekes notes that Ancient Greek ὄσσομαι (óssomai) developed a meaning different from Ancient Greek ὄπωπα (ópōpa) and Ancient Greek ὄψομαι (ópsomai).[3]

Derivatives

  • *h₃ekʷih₁ 'both eyes', the dual of the root noun, in Greek ὄσσε (ósse), which Beekes identifies with the Old Church Slavonic dual and Armenian աչք (ačʿkʿ).[7]
  • *h₃ekʷ-o-, in Old Church Slavonic око (oko, “eye”).[8]
  • *h₃e/okw-(e)lo-, in Latin oculus (“eye”).[5]
  • *h₃okʷ-men- in Greek ὄμμα (ómma), and *h₃kʷ-ti- in Ancient Greek ὄψις (ópsis).[2]
  • *-h₃kʷ- in compounds, such as Vedic न्यञ्च् (nyàñc-), according to NIL.[2]

Reflexes

  • Indo-Aryan: Sanskrit ईक्षते (ī́kṣate, “perceives”), as listed by LIV.[1]
  • Greek: Ancient Greek ὄπωπα (ópōpa, “to watch, to observe”), Ancient Greek ὄσσε (ósse, “both eyes”).[9][7]
  • Armenian: Old Armenian աչք (ačʿkʿ, “eyes”).[10]
  • Slavic: Old Church Slavonic око (oko, “eye”).[8]
  • Baltic: Lithuanian akìs (“eye”).[11]
  • Italic: Latin oculus (“eye”).[5]

References

  1. ^ a b c d e f g h i Rix, Helmut, et al. (2001), Lexikon der indogermanischen Verben, 2nd ed., Wiesbaden: Reichert, p. s.v. *h₃ekʷ-
  2. ^ a b c d e Wodtko, Dagmar S.; Irslinger, Britta; Schneider, Carolin (2008), Nomina im indogermanischen Lexikon, Heidelberg: Winter, p. s.v. *h₃ekʷ-
  3. ^ a b c d 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, p. s.v. ὄσσομαι
  4. ^ Sihler, Andrew L. (1995), New Comparative Grammar of Greek and Latin, New York: OUP
  5. ^ a b c d de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill, p. s.v. oculus
  6. ^ Zair, Nicholas (2012), The Reflexes of the Proto-Indo-European Laryngeals in Celtic, Leiden: Brill, p. 261
  7. ^ 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, p. s.v. ὄσσε
  8. ^ a b Derksen, Rick (2008), Etymological Dictionary of the Slavic Inherited Lexicon, Leiden Indo-European Etymological Dictionary Series 4, Leiden / Boston: Brill, p. 365
  9. ^ 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, p. s.v. ὄπωπα
  10. ^ Martirosyan, Hrach K. (2010), Etymological Dictionary of the Armenian Inherited Lexicon, Leiden: Brill, p. 112
  11. ^ Derksen, Rick (2015), Etymological Dictionary of the Baltic Inherited Lexicon, Leiden: Brill, p. 61
Cite this entry

“*h₃ekʷ-.” Etymologically, 7 Nov. 2026, etymologically.com/ine-pro/*h%E2%82%83ek%CA%B7-. Accessed 8 Nov. 2026.

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