affective disorder: Meaning and Definition of

af'fective disor'der

Pronunciation: [key]
— Psychiatry. Psychiatry.
  1. any mental disorder, as depressive disorder, bipolar disorder, or cyclothymia, in which a major disturbance of feelings or emotions is predominant.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.