- a clockwork device with an inverted pendulum that beats time at a rate determined by the position of a sliding weight on the pendulum: it is used esp. to help a person maintain regular tempo in practicing on the piano, etc.
- an electrical device that produces an intermittent sound or flashing light, for similar use
Origin of metronomefrom metro- + Classical Greek nomos, law: see -nomy
A device used to mark time by means of regularly recurring ticks or flashes at adjustable intervals.
Origin of metronomeGreek metron measure ; see mē-2 in Indo-European roots.Greek nomos rule, division ; see nem- in Indo-European roots.