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Pronunciation: dis-so'se-a'shun, -she-a'shun


  1. Separation, or a dissolution of relations.
  2. The change of a complex chemical compound into simpler ones by any lytic reaction, by ionization, by heterolysis, or by homolysis.
  3. An unconscious separation of a group of mental processes from the rest, resulting in an independent functioning of these processes and a loss of the usual associations, a separation of affect from cognition.
  4. A state used as an essential part of a technique for healing in psychology and psychotherapy, for instance in hypnotherapy or the neurolinguistic programming technique of Time-Line therapy.
  5. The translocation between a large chromosome and a small supernumerary one.
  6. Separation of the nuclear components of a heterokaryotic dikaryon.
  7. The disassembly of protomers from a larger marcomolecular complex or polymer.

See: dissociative identity disorder

Synonym(s): disassociation

[L. dis-socio, pp. -atus, to disjoin, separate, fr. socius, partner, ally]

See Also: Time-Line therapy

Further information

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.