memory

in immunology
synonym: immunological memory
https://doi.org/10.1351/goldbook.13451
Characteristic of the acquired immune response (see acquired immunity) of lymphocytes whereby a second encounter with a given antigen produces a secondary immune response that is faster, greater, and longer lasting than the primary immune response.
Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1212 [Terms] [Paper]