/pay'lee oh suy bear"ee euhn/ or, esp. Brit., /pal'ee-/ , n.
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).
adj.
3. of or pertaining to Paleosiberian.
[ 1910-15; PALEO- + SIBERIAN ]