1. the ability to retain information or a representation of past experience, based on the mental processes of learning or encoding, retention across some interval of time, and retrieval or reactivation of the memory.

2. specific information or a specific past experience that is recalled.

3. the hypothesized part of the brain where traces of information and past experiences are stored. See memory storage; memory system. See also explicit memory; immediate memory; implicit memory; long-term memory; short-term memory.