revolutions per minute



Cars & Driving

  • noun the number of times the crankshaft turns in one minute.


  • A unit of angular velocity indicating the number of 360° rotations completed per minute. This is equal to about 0.1047198 radian per second. Its abbreviation is rpm.

Media Studies

  • noun a measurement of how fast something turns, usually used to describe the speed that a gramophone record plays at.

General Science

  • abbreviationr.p.m.