movement, motility, motion, move - a change of position that does not entail a change of location; "the reflex motion of his eyebrows revealed his surprise"; "movement is a sign of life"; "an impatient move of his hand"; "gastrointestinal motility"

tremor, shudder - an involuntary vibration (as if from illness or fear)

ambiance, ambience, atmosphere - a particular environment or surrounding influence; "there was an atmosphere of excitement"

motion - a state of change; "they were in a state of steady motion"

tremolo - (music) a tremulous effect produced by rapid repetition of a single tone or rapid alternation of two tones

tremor - shaking or trembling (usually resulting from weakness or stress or disease)

natural philosophy, physical science, physics - the science of matter and energy and their interactions

ripple - (electronics) an oscillation of small amplitude imposed on top of a steady value

undulation, wave - (physics) a movement up and down or back and forth

transient - (physics) a short-lived oscillation in a system caused by a sudden change of voltage or current or load

beat - a single pulsation of an oscillation produced by adding two waves of different frequencies; has a frequency equal to the difference between the two oscillations

resonance - a vibration of large amplitude produced by a relatively small vibration near the same frequency of vibration as the natural frequency of the resonating system

sympathetic vibration - (physics) vibration produced by resonance