Paleosiberian

[ pey-lee-oh-sahy-beer-ee-uh n or, esp. British, pal-ee- ]
/ ˌpeɪ li oʊ saɪˈbɪər i ən or, esp. British, ˌpæl i- /

noun

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.
Paleo-Asiatic(def 1).

adjective

of or relating to Paleosiberian.

Origin of Paleosiberian

1910–15; paleo- + Siberian