#1 dissociate v. [disassociate, divorce, disunite, disjoint] part; cease or break association with; "She disassociated herself from the organization when she found out the identity of the president". wn
#2 dissociate v. [decouple] regard as unconnected; "you must dissociate these two events!"; "decouple our foreign policy from ideology". wn
#3 dissociate v. to undergo a reversible or temporary breakdown of a molecule into simpler molecules or atoms; "acids dissociate to give hydrogen ions". wn
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