/ Dictionary / Index J Jordan engine: Meaning and Definition of Find definitions for: Jor'dan en'gine Pronunciation: [key] a machine for beating and refining pulp, used in manufacturing certain grades of paper. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Jordan curve theorem Jordan-Hölder theorem Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language