• (a.) Same as Aryan, and Indo-European. • (a.) Pertaining to or denoting the Teutonic family of languages as related to the Sanskrit, or derived from the ancient Aryan language.
Also called Indo-Aryan, this is an obsolete term for Indo-European.
In`do-Ger·man'ic adjective [ Indo- + Germanic .] 1. Same as Aryan , and Indo- European . 2. Pertaining to or denoting the Teutonic family of languages as related to the Sanskrit, or derived from the ancient Aryan language. 
adjective of or relating to the Indo-European language family
Indo-European (no longer current).