'Commutative' definitions:

Definition of 'commutative'

From: WordNet
adjective
(of a binary operation) independent of order; as in e.g. "a x b = b x a"

Definition of 'Commutative'

From: GCIDE
  • Commutative \Com*mut"a*tive\, a. [CF. F. commutatif.]
  • 1. Relative to exchange; interchangeable; reciprocal. -- {Com*mut"a*tive"ly}, adv. [1913 Webster]
  • Rich traders, from their success, are presumed . . . to have cultivated an habitual regard to commutative justice. --Burke. [1913 Webster]
  • 2. (Math.) having the property of commutativity. [PJC]