resonance

1. (uncountable) The quality of being resonant.Examples: "The leiter-wagons contained great, square boxes, with handles of thick rope; these were evidently empty by the ease with which the Slovaks handled them, and by their resonance as they were roughly moved."Synonyms: resounduncountable

2. (countable) A resonant sound, echo, or reverberation, such as that produced by blowing over the top of a bottle.Examples: "He passed on, and the lights and cries of the station dropped away, merged in a wider haze and a hollower resonance, as the train gathered itself up with a long shake and rolled out again into the darkness."countable

3. (medicine) The sound produced by a hollow body part such as the chest cavity upon auscultation, especially that produced while the patient is speaking.countableuncountable

4. (figuratively) Something that evokes an association, or a strong emotion; something that strikes a chord.Examples: "emotional resonance"; "But the film is largely redeemed by an unexpected emotional resonance befitting a Steven Spielberg production."; "The whole recognition process has a deep colonial resonance. [title]"countablefigurativelyuncountable

5. (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.Examples: "One of the most important developments beyond the original concept of magnetic resonance is so-called double resonance in which, as the name suggests, one excites one resonant transition of a system while simultaneously monitoring a different transition."countableuncountable

6. (nuclear physics) A short-lived subatomic particle or state of atomic excitation that results from the collision of atomic particles.Examples: "When experiments with the first ‘atom-smashers’ took place in the 1950s to 1960s, many short-lived heavier siblings of the proton and neutron, known as ‘resonances’, were discovered."countableuncountable