1. Penutian - Noun
2. Penutian - Proper noun
a family of Amerindian language spoken in the great interior valley of California
a member of a North American Indian people speaking one of the Penutian languages
Source: WordNetOnce thought to be a language isolate, Klamath–Modoc is now considered a member of the Plateau Penutian language family. Source: Internet
The Sahaptian sub-family is one of the branches of the Plateau Penutian family, which in turn may be related to a larger Penutian grouping. Source: Internet