Revolutions per minute

number of times that a something revolves in the space of a minute

Revolutions per minute (abbreviated rpm, RPM, r/min, or r·min−1) is a unit of frequency: the number of full rotations completed in one minute around a fixed axis. It is most commonly used as a measure of rotational speed or angular velocity of some mechanical component.Standards organizations generally recommend the symbol r/min, which is more consistent with the general use of unit symbols. This is not enforced as an international standard; in French, for example, tr/mn (tours par minute) is commonly used.The corresponding International System of Units (SI) unit would be the hertz and we have:1 r/min = (1/60) revolutions per  second = 0.01666667 Hz
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Noun
1. rate of revolution of a motor; "the engine was doing 6000 revs"
(synonym) rpm, rev
(hypernym) rate