eteo-

Learned borrowing from Ancient Greek ἐτεός (eteós, “true, original”).

• (Received Pronunciation) IPA^(key): /ˈɛt.i.əʊ/
• (General American) IPA^(key): /ˈɛt.i.oʊ/

eteo-

1. (linguistics) An ancient or ancestral language (or form of a language), dating from a time before it came into contact with another language; particularly one which had considerable influence, or which later displaced it entirely.
   • 2010, Clyde Winters, “Greek Influence on Sanskrit Language”, in Journal of Eurasian Studies‎, volume 2, number 3, archived from the original on 2024-02-17:

     Eteo-Tocharian is a good example of the influence of Greeks in Central Asia. Eteo-Tocharian was written in a modified Greek alphabet (Maricq 1958:398). This script is a manifestation of the Greek influence in Bactria, even after the Kushana subjugation of this area.

   • 2015, Xun Gong, “How Old is the Chinese in Bái?”, in Recent Advances in Old Chinese Historical Phonology Workshop‎, archived from the original on 2021-03-05:

     Bái vocabulary, later Chinese borrowings excluded, can be divided into a Sino-Bái vocabulary, which shows a close resemblance to Chinese, and a Pre-Bái or Eteo-Bái vocabulary, which is not etymologizable into Chinese.

• proto-