Definition of dissociation
1
:the act or process of dissociating :the state of being dissociated: such as
a
:the process by which a chemical combination breaks up into simpler constituents;
especially
:one that results from the action of energy (such as heat) on a gas or of a solvent on a dissolved substance
b
:the separation of whole segments of the personality (as in multiple personality disorder) or of discrete mental processes (as in the schizophrenias) from the mainstream of consciousness or of behavior
2
:the property inherent in some biological stocks (as of certain bacteria) of differentiating into two or more distinct and relatively permanent strains;
also
:such a strain
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