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dissociation dis·so·ci·a·tion (dĭ-sō'sē-ā'shən, -shē-)
The chemical process by which the action of a solvent or a change in physical condition, as in pressure or temperature, causes a molecule to split into simpler groups of atoms, single atoms, or ions.
The separation of an electrolyte into ions of opposite charge.
Separation of a group of related psychological activities into autonomously functioning units, as in the generation of multiple personalities.