Eurasiatic

Etymology
Attested since 1863.

Proper noun

 * 1) A hypothetical superfamily of languages proposed by Joseph Greenberg that groups together several language families of Europe, Asia, and North America, namely Etruscan, Indo-European, Uralic-Yukaghir, Altaic, Korean-Japanese-Ainu, Nivkh, Chukotian and Eskimo-Aleut.

Adjective

 * 1) Of or pertaining to the Eurasiatic group of languages.