/ Dictionary / Index J Jacksonville: Meaning and Definition of Find definitions for: Jack•son•ville Pronunciation: ( jak'sun-vil"), [key] — n. a seaport in NE Florida, on the St. John's River. 540,898. a city in central Arkansas. 27,589. a city in W Illinois. 20,284. a city in SE North Carolina. 17,056. a town in E Texas. 12,264. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: jacksonville (Thesaurus) Jacksonism Jacksonville Beach 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