Look up dissociation in Wiktionary, the free dictionary.
Dissociation, in the wide sense of the word, is an act of disuniting or separating a complex object into parts.
Dissociation may also refer to:
Dissociation (chemistry), general process in which molecules or ionic compounds (complexes, or salts) split into smaller particles, usually in a reversible manner
Dissociation (neuropsychology), identification of the neural substrate of a particular brain function through various methods
Dissociation (psychology), an experience of having one's attention and emotions detached from the environment
Dissociation (rhetoric), a rhetorical device in which the speaker separates a notion considered to form a unitary concept into two new notions to affect an audience in some way