Pronunciation: (fyOOg),[key] —n. 1. Music.a polyphonic composition based upon one, two, or more themes, which are enunciated by several voices or parts in turn, subjected to contrapuntal treatment, and gradually built up into a complex form having somewhat distinct divisions or stages of development and a marked climax at the end.
2. Psychiatry.a period during which a person suffers from loss of memory, often begins a new life, and, upon recovery, remembers nothing of the amnesic phase.