paleosiberian

noun

1. a group of languages comprising those languages of Siberia that are not affiliated with Indo-European, Altaic, Uralic, or Eskimo-Aleut and including the Chukotian family and the unrelated language isolates Ket, Nivkh, and Yukaghir; Paleo-Asiatic.
2. Paleo-Asiatic(def 1).

adjective

3. of or relating to Paleosiberian.