/ Dictionary / Index A Addisonian: Meaning and Definition of Find definitions for: Ad•di•so•ni•an Pronunciation: (ad"u-sō'nē-un), [key] — adj. of, pertaining to, or characteristic of Joseph Addison or his works. fluent and clear in literary style. of or pertaining to Addison's disease. —n. one who studies the works of Joseph Addison. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Addison Addison's disease Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language