Dictionary
com•mu•ta•tive
Pronunciation: (ku-myOO'tu-tiv, kom'yu-tā"tiv), [key]—
adj.
1. of or pertaining to commutation, exchange, substitution, or interchange.
2. Math.
a. (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.
b. having reference to this property:
commutative law for multiplication. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.