/yooh"toh az"tek euhn/ , n.
1. an American Indian language family, widespread from Idaho to Central America and from the Rocky Mountains to the Pacific: this family includes Hopi, Ute, Shoshone, Comanche, Nahuatl, Papago, Pima, and other languages.
adj.
2. of or pertaining to Uto-Aztecan.
[ 1891; UTE + -O- + AZTECAN ]