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Pronunciation: sim'be-o'sis


  1. The biologic association of two or more species.
  2. The mutual cooperation or interdependence of two people, such as mother and infant, or husband and wife; sometimes used to denote excessive or pathologic interdependence of two people.

[G. symbiosis, state of living together, fr. sym- + bios, life, + -osis, condition]

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