1. memory disorder seen in middle aged and elderly persons; characterized by an episode of amnesia and bewilderment that lasts for several hours; person is otherwise alert and intellectually active;
WordNet (r) 3.0 (2006):
transient global amnesia
n 1: memory disorder seen in middle aged and elderly persons;
characterized by an episode of amnesia and bewilderment
that lasts for several hours; person is otherwise alert and
intellectually active