Reconstruction:Proto-Kartvelian/otxo-

According to Klimov, borrowed from Proto-Indo-European *(H)oḱto- (“four fingers”) of which *oḱtṓw (“eight”) was the dual form.

*otxo-

1. four

• Proto-Georgian-Zan:
  • Old Georgian: ოთხი (otxi)
    • Georgian: ოთხი (otxi)
  • Zan
    • Laz: ოთხო (otxo)
    • Mingrelian: ოთხი (otxi)
• Svan: უ̂ოშთხუ̂ (ûoštxû), ო̄შთხუ̂ (ōštxû), ოშთხუ̂ (oštxû), უ̂ო̄შთხუ̂ (ûōštxû)

• Климов, Г. А. (1977) “Картвельское *otxo- ‘четыре’ ~ индоевропейское *ok̂to- [Kartvelian *otxo- ‘four’ ~ Indo-European *ok̂to-]”, in Этимология‎ (in Russian), number 1975, Moscow, pages 162–163
• Климов, Г. А. (1994) Древнейшие индоевропеизмы картвельских языков [The Oldest Indo-Europeanisms in Kartvelian Languages] (in Russian), Moscow: Nasledie, →ISBN, pages 59–63
• Klimov, G. A. (1994) “L'analogie kartvélienne de l'IE *ok̂tō(u̯)=”, in Roland Bielmeier, Reinhard Stempel, editors, Indogermanica et Caucasica: Festschrift für Karl Horst Schmidt zum 65. Geburtstag (in French), Berlin and New York: Walter de Gruyter, pages 472–478
• Klimov, G. A. (1998) Etymological Dictionary of the Kartvelian Languages (Trends in linguistics. Documentation; 16), New York, Berlin: Mouton de Gruyter, page 145
• Fähnrich, Heinz (1994) Grammatik der altgeorgischen Sprache (in German), Hamburg: Helmut Buske Verlag, page 251
• Penrixi (Fähnrich), Hainc, Sarǯvelaʒe, Zurab (2000) Kartvelur enata eṭimologiuri leksiḳoni [Etymological Dictionary of the Kartvelian Languages] (in Georgian), 2nd edition, Tbilisi: Tbilisi Sulkhan-Saba Orbeliani State University Press, pages 365–367
• Fähnrich, Heinz (2007) Kartwelisches Etymologisches Wörterbuch [Kartvelian Etymological Dictionary] (Handbuch der Orientalistik; VIII.18) (in German), Leiden, Boston: Brill, pages 325–326
• Blažek, Václav (1999) Numerals: comparative-etymological analyses of numeral systems and their implications (Opera Universitatis Masarykianae Brunensis, Facultas philosophica; 322)‎, Brno: Masarykova Univerzita, pages 82–83
• Bjørn, Rasmus (2019) “Nouns and Foreign Numerals: Anatolian ‘Four’ and the Development of the PIE Decimal System”, in Matilde Serangeli and Thomas Olander, editors, Dispersals and Diversification: Linguistic and Archaeological Perspectives on the Early Stages of Indo-European (Brill's Studies in Indo-European Languages & Linguistics; 19), Leiden and Boston: Brill, →DOI, pages 62–64