information stored in the brain and retrievable over a long period of time, often over the entire life span of the individual (contrasted with short-term memory).
Origin of long-term memory
First recorded in 1965–70
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The phase of the memory process considered the permanent storehouse of retained information.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.