/ Dictionary / Index J Jordan curve theorem: Meaning and Definition of Find definitions for: Jor'dan curve' the"orem Pronunciation: [key] — Math. Math. the theorem that the complement of a simple closed curve can be expressed as the union of two disjoint sets, each having as boundary the given curve. Cf. simple closed curve. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Jordan curve Jordan engine Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language