proethnic

形容词 adj.
英 /pɹəʊˈɛθ.nɪk/    美 /pɹoʊˈɛθ.nɪk/

英文释义

形容词 adj.
  1. of or pertaining to the period prior to the split of the Proto-Indo-European language into the Indo-European language family not-comparable
    — The original meaning of the root is 'put'; but, from the proethnic period, a secondary development in the line ('set,' 'establish,' and so) 'make,' 'do,' is clear.

词源

From pro- + ethnic.
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