Indo-Hittite languages
In Indo-European linguistics, the term Indo-Hittite (also Indo-Anatolian) refers to Edgar Howard Sturtevant's 1926 hypothesis that the Anatolian languages split off a Pre-Proto-Indo-European language considerably earlier than the separation of the remaining Indo-European languages. The prefix Indo- does not refer to the Indo-Aryan branch in particular, but stands for Indo-European, and the -Hittite part refers to the Anatolian language family as a whole.