Resonator

·add. ·noun Anything that resounds or resonates;.

II. Resonator ·add. ·noun The antenna system and other high-frequency circuits of a receiving apparatus.

III. Resonator ·add. ·noun An open box for containing a sounder and designed to concentrate and amplify the sound.

IV. Resonator ·noun Anything which resounds; specifically, a vessel in the form of a cylinder open at one end, or a hollow ball of brass with two apertures, so contrived as to greatly intensify a musical tone by its resonance. It is used for the study and analysis of complex sounds.

V. Resonator ·add. ·noun Any of various apparatus for exhibiting or utilizing the effects of resonance in connection with open circuits, as a device having an oscillating circuit which includes a helix of bare copper wire, a variable number of coils of which can be connected in circuit with a condenser and spark gap excited with an induction coil. It is used to create high-frequency electric brush discharges.