#rotational_latency__latency  (computer science) the time it takes for a specific block of data on a data track to rotate around to the read/write head
  supertype:  time_interval__interval  a definite length of time marked off by two instants
  part of:  access_time  (computer science) the interval between the time data is requested by the system and the time the data is provided by the drive; "access time is the sum of seek time and rotational latency and command processing overhead"

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