Indo-Uralic adjective1 •Of or relating to both the Indo-European and the Uralic languages; especially, of or pertaining to a proposed language family containing both the Indo-European and the Uralic languages.Perhaps the most widely accepted proposal is of an Indo-Uralic family, encompassing PIE and Proto-Uralic. — 2007 formsmore Indo-Uralic · most Indo-Uralic