1. memory trace a postulated biochemical change that represents a memory
  2. metric space a set of points such that for every pair of points there is a nonnegative real number called their distance that is symmetric and satisfies the triangle inequality
  3. memory device a device that preserves information for retrieval
  4. outer space any location outside the Earth's atmosphere
  5. memory access the operation of reading or writing stored information
  6. aerospace the atmosphere and outer space considered as a whole
  7. memory loss partial or total loss of memory
  8. memory chip a RAM microchip that can be plugged into a computer to provide additional memory
  9. memorise commit to memory; learn by heart
  10. air space the space in the atmosphere immediately above the earth
  11. hair space (printing) the narrowest of the spaces used to separate words or letters
  12. memorable worth remembering
  13. remorse a feeling of deep regret, usually for some misdeed
  14. cyberspace a worldwide network of computer networks
  15. memory cache (computer science) RAM memory that is set aside as a specialized buffer storage that is continually updated; used to optimize data transfers between system elements with different characteristics
  16. memory image a mental image of something previously experienced
  17. memorialize be or provide a monument to a person or an event
  18. memorize learn by heart
  19. memorialise be or provide a memorial to a person or an event
  20. dead-air space an unventilated area where no air circulates