Proto-Algonquian

[ proh-toh-al-gong-kee-uh n, -kwee-uh n ]
/ ˌproʊ toʊ ælˈgɒŋ ki ən, -kwi ən /

noun

the unattested parent language from which the Algonquian languages are descended.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019