| any mental disorder, as depressive disorder, bipolar disorder, or cyclothymia, in which a major disturbance of feelings or emotions is predominant. |
| affective disorder n. A mental disorder characterized by a consistent, pervasive alteration in mood, and affecting thoughts, emotions, and behaviors. |
affective disorder n.
Any of a group of disorders characterized by a prolonged, pervasive disturbance of mood together with a full or partial manic or depressive response that is not caused by a separate physical or mental disorder.