/ Dictionary / Index C complex variable: Meaning and Definition of Find definitions for: com'plex var'iable Pronunciation: [key] — Math. Math. a variable to which complex numbers may be assigned as value. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. complex sentence compliable Related Content Daily Word Quiz: resilient Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language