What is engram means in dienetics?

Answer 1

An altered state of living tissue that is believed to underlie memory. An engram may occur as a permanent trace left by a stimulus in nervous tissue. An example of an engram is a specific, learned, and memorized motor pattern stored in both the sensory and motor portions of the brain, that can be replayed on request. A term used in Scientology and Dianetics for a "recording" of a past painful event not normally accessible to the conscious mind