/ Dictionary / Index W well-ordering theorem: Meaning and Definition of Find definitions for: well'-or'der•ing the"orem Pronunciation: (wel'ôr'dur-ing), [key] — Math. Math. the theorem of set theory that every set can be made a well-ordered set. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. well-ordered set wellpoint 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