/ Dictionary / Index N Nonintercourse Act: Meaning and Definition of Find definitions for: Nonin'tercourse Act" Pronunciation: [key] — U.S. Hist. U.S. Hist. the act of Congress (1809) prohibiting all shipping and trade between the United States and British- or French-controlled ports. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. nonintercourse noninterference Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language