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Definition: (noun) an underlying reason or explanation.
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mem·o·ry  audio  (mm-r) KEY 

NOUN:
pl. mem·o·ries
  1. The mental faculty of retaining and recalling past experience.
  2. The act or an instance of remembering; recollection: spent the afternoon lost in memory.
  3. All that a person can remember: It hasn't happened in my memory.
  4. Something remembered: pleasant childhood memories.
  5. The fact of being remembered; remembrance: dedicated to their parents' memory.
  6. The period of time covered by the remembrance or recollection of a person or group of persons: within the memory of humankind.
  7. Biology Persistent modification of behavior resulting from an animal's experience.
  8. Computer Science
    1. A unit of a computer that preserves data for retrieval.
    2. Capacity for storing information: two gigabytes of memory.
  9. Statistics The set of past events affecting a given event in a stochastic process.
  10. The capacity of a material, such as plastic or metal, to return to a previous shape after deformation.
  11. Immunology The ability of the immune system to respond faster and more powerfully to subsequent exposure to an antigen.
ETYMOLOGY:
Middle English memorie, from Anglo-French, from Latin memoria, from memor, mindful; see (s)mer-1 in Indo-European roots


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