/ Dictionary / Index C Canonicus: Meaning and Definition of Find definitions for: Ca•non•i•cus Pronunciation: (ku-non'i-kus), [key] — n. c1565–1647, Narragansett leader: yielded Rhode Island to Roger Williams 1636. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. canonicity canonist Related Content Daily Word Quiz: lyceum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language