Definition of: vibration

(vī·brā′shən) noun
1. The act of vibrating; oscillation.
2. Physics a A periodic, usually rapid back–and–forth motion of a particle, as of electrons in an atom, or the parts of an elastic or rigid body suddenly released from tension. b Any physical process characterized by cyclic variations in amplitude, intensity, or the like, as wave motion or an electric field. c A single complete oscillation.
3. plural Slang One's emotional response to an aura felt to surround a person or thing, especially when considered in or out of harmony with oneself: good vibrations.
—vi·bra′tion·al adjective