What is nostractic?

Answer 1

A hypothetical phylum of languages comprising the Indo-European, Semitic, Altaic, and Dravidian families.

Source: Dictionary.com

Answer 2

Nostratic is a hypothetical language superfamily that is proposed to include several language families such as Indo-European, Uralic, and Afro-Asiatic, among others. The theory suggests that these language families share a common ancestor. However, the existence and classification of the Nostratic language family remain highly debated among linguists.