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This Proto-Indo-European entry contains reconstructed terms and roots. As such, the term(s) in this entry are not directly attested, but are hypothesized to have existed based on comparative evidence.




  1. (anatomy) joint

Derived terms[edit]

  • *kóḱs-yeh₂
    • Proto-Germanic: *hahsjō[1]
  • *kóḱs-eh₂
    • Proto-Italic: *koksā
    • Proto-Celtic: *koxsā (leg) (see there for further descendants)
  • *kóḱs-o-s
    • Proto-Indo-Iranian: *káćšas (armpit) (see there for further descendants)
  • Tocharian B: kakse (loins)


  1. ^ Kroonen, Guus (2013), “hahsjō-”, in Etymological Dictionary of Proto-Germanic (Leiden Indo-European Etymological Dictionary Series; 11), Leiden, Boston: Brill, →ISBN, page 199
  2. ^ De Vaan, Michiel (2008), “coxa”, in Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill, →ISBN, page 140