DictionaryvibrationBack-and-forth motion
noun

vibration

vie-BRAY-shun/vaɪˈbreɪʃn/

Repeated back-and-forth movement.

The plucked guitar string produces sound through its rapid vibration.

A plucked guitar string shown trembling between fixed ends, close-up realistic string and fine motion marks.
Etymology

The pieces name the action of setting something trembling. Early English use described a musical string moving rapidly to and fro—the same physical motion meant here.

In context

LEARN ANIMATED0:01
echo objective to learn the phenomenon of echo sound is propagated through a medium by a back and forth vibration of particles
SOUND ECHO ANIMATED

More examples

  • I feel the washing machine's vibrations through the floor.
  • The phone's vibration alerts me to a new message.
  • Rubber pads reduce vibration from the motor.

Forms

vibration · vibrations

vibrate verb — To move quickly back and forth.

Similar words

oscillation
Often describes a regular cycle between two positions or states.
shaking
Emphasizes noticeable movement that need not follow a regular cycle.