- (British) IPA: /ˈɹɛzənəns/
- The quality of being resonant.
- A resonant sound, echo, or reverberation, such as that produced by blowing over the top of a bottle.
- (medicine) The sound produced by a hollow body part such as the chest cavity upon auscultation, especially that produced while the patient is speaking.
- (figuratively) Something that evokes an association, or a strong emotion.
- (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.
- (nuclear physics) A short-lived subatomic particle or state of atomic excitation that results from the collision of atomic particles.
- 2004, 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. — Frank Close, Particle Physics: A Very Short Introduction (Oxford 2004, p. 35)
- An increase in the strength or duration of a musical tone produced by sympathetic vibration.
- (chemistry) The property of a compound that can be visualized as having two structures differing only in the distribution of electrons; mesomerism.
- (astronomy) A influence of the gravitational forces of one orbiting object on the orbit of another, causing periodic perturbations.
- (electronics) The condition where the inductive and capacitive reactances have equal magnitude.
- Russian: резона́нс