Definitions from Wiktionary (resonance)

▸ noun:  (uncountable) The quality of being resonant.
▸ noun:  (countable) A resonant sound, echo, or reverberation, such as that produced by blowing over the top of a bottle.
▸ noun:  (medicine) The sound produced by a hollow body part such as the chest cavity upon auscultation, especially that produced while the patient is speaking.
▸ noun:  (figuratively) Something that evokes an association, or a strong emotion; something that strikes a chord.
▸ noun:  (physics) The increase in the amplitude of an oscillation of a system under the influence of a periodic force whose frequency is close to that of the system's natural frequency.
▸ noun:  (nuclear physics) A short-lived subatomic particle or state of atomic excitation that results from the collision of atomic particles.
▸ noun:  An increase in the strength or duration of a musical tone produced by sympathetic vibration.
▸ noun:  (chemistry) The property of a compound that can be visualized as having two structures differing only in the distribution of electrons.
▸ noun:  (astronomy) An influence of the gravitational forces of one orbiting object on the orbit of another, causing periodic perturbations.
▸ noun:  (electronics) The condition where the inductive and capacitive reactances have equal magnitude.
▸ noun:  (sociology) A quality of human relationship with the world.

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