Amnesia from the Greek root Amnesia means forgetfulness and refers to the relative or complete inability to recall previous experiences and perceptions. The most familiar type of amnesia for normal people is memory loss following a stroke. There are two types of amnesia: anterograde amnesia and retrograde amnesia

Amnesia means loss of memory. I may be in a car accident, hit my head and as a result lose my memory of some or all past events. If this happened, I would have amnesia.

The loss of memories.