associative
as.so.cia.tive \*-'so--s(h)e--.a-t-iv, -sh*t-iv\ aj 1: of or relating to association esp. of ideas or images 2: dependent on or acquired by association or learning 3: combining elements in such a manner that the result is independent of the grouping {addition is an ~ operation} - as.so.cia.tive.ly av