WordNet (r) 3.0 (2006):

random memory
    n 1: the most common computer memory which can be used by
         programs to perform necessary tasks while the computer is
         on; an integrated circuit memory chip allows information to
         be stored or accessed in any order and all storage
         locations are equally accessible [syn: random-access
         memory, random access memory, random memory, RAM,
         read/write memory]