| amnesia |  |  | 
| n. (cognition) | 1. amnesia, blackout, memory loss | partial or total loss of memory.; "he has a total blackout for events of the evening" | 
|  | ~ cognitive state, state of mind | the state of a person's cognitive processes. | 
|  | ~ anterograde amnesia, posttraumatic amnesia | loss of memory for events immediately following a trauma; sometimes in effect for events during and for a long time following the trauma. | 
|  | ~ retrograde amnesia | loss of memory for events immediately preceding a trauma. | 
|  | ~ forgetfulness | tendency to forget. | 
|  | ~ selective amnesia | amnesia about particular events that is very convenient for the person who cannot remember.; "why do politicians always develop selective amnesia when questioned about their transgressions?" | 
|  | ~ transient global amnesia | 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. | 
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