/ Dictionary / Index C commutative: Meaning and Definition of Find definitions for: com•mu•ta•tive Pronunciation: (ku-my'tu-tiv, kom'yu-tā"tiv), [key] — adj. of or pertaining to commutation, exchange, substitution, or interchange. commutative law for multiplication. (of a binary operation) having the property that one term operating on a second is equal to the second operating on the first, as a × b = b × a. having reference to this property:commutative law for multiplication. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: commutative (Thesaurus) commutation ticket commutative law 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