Pronunciation: (nä-dā'nē, nä"dā-nā'),[key] —n. 1. a group of North American Indian languages, comprising the Athabaskan family, Eyak, Tlingit, and Haida, hypothetically considered to be descendants of a single protolanguage: the genetic relationship of either Tlingit or Haida to Athabaskan and Eyak is now disputed.
2. the hypothesized protolanguage itself.
—adj. of, belonging to, or pertaining to Na-Dene. Also,Na•de'ne.