noun
Altaic language family
Refers to the proposed, now largely discredited, language family that includes Turkic, Mongolic, and Tungusic languages, sometimes also Koreanic and Japonic.
アルタイ語族という分類は、現在では多くの言語学者に否定されている。
The classification of the Altaic language family is now rejected by many linguists.
From アルタイ (Altai, a mountain range in Central Asia) + 語族 (language family). The term was coined in the 19th century to group languages thought to share a common origin.