- 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 metronome; from metro- + Classical Greek nomos, law: see -nomy
Origin of metronomeGreek metron, measure; see m&emacron;-2 in Indo-European roots + Greek nomos, rule, division; see nem- in Indo-European roots.