/ Dictionary / Index A Algonkian: Meaning and Definition of Find definitions for: Al•gon•ki•an Pronunciation: (al-gong'kē-un), [key] — adj., n., pl. -ans, -an. —adj. Proterozoic (def. 1). Algonquian. —n. Proterozoic (def. 2). Algonquian. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: algonkian (Thesaurus) algometer Algonkin Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language