as·so·ci·a·tive / əˈsōsēˌātiv; -shē-; -sēətiv; -shətiv/ • adj. 1. of or involving the action of associating ideas or things: an associative, nonlinear mode of thought. ∎ Comput. of or denoting computer storage in which items are identified by content rather than by address.2. Math. involving the condition that a group of quantities connected by operators gives the same result whatever their grouping, as long as their order remains the same, e.g., (a × b) × c = a × (b × c).