An increase in the strength or duration of a musical tone produced by sympathetic vibration.
A short-lived subatomic particle or state of atomic excitation that results from the collision of atomic particles.
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.
The property of a compound that can be visualized as having two structures differing only in the distribution of electrons.
A resonant sound, echo, or reverberation, such as that produced by blowing over the top of a bottle.
Something that evokes an association, or a strong emotion; something that strikes a chord.
The sound produced by a hollow body part such as the chest cavity upon auscultation, especially that produced while the patient is speaking.
A influence of the gravitational forces of one orbiting object on the orbit of another, causing periodic perturbations.
The condition where the inductive and capacitive reactances have equal magnitude.
A quality of human relationship with the world.
The quality of being resonant.
A variation in the volume of a note or a chord, evoking a tremor or quiver.
The device in an organ that produces a tremolo effect.
A rapid repetition of the same note, or an alternation between two or more notes. It can also be intended to mean a rapid and repetitive variation in pitch for the duration of a note. It is notated by a strong diagonal bar across the note stem, or a detached bar for a set of notes (or stemless notes).