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resonator

[rez-uh-ney-ter] /ˈrɛz əˌneɪ tər/
noun
1.
anything that resonates.
2.
an appliance for increasing sound by resonance.
3.
an instrument for detecting the presence of a particular frequency by means of resonance.
4.
Electronics.
  1. a hollow enclosure (cavity resonator) made of conducting material of such dimensions that electromagnetic radiation of a certain frequency will resonate.
  2. any circuit having this frequency characteristic.
Origin
1865-1870
1865-70; resonate + -or2
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for resonator
  • Correspondingly, the resonator was in a superposition of vibrating and not vibrating.
  • Each resonator point is the average of five measurements corresponding to the five lengths.
  • The motion of the resonator causes a changing capacitance.
British Dictionary definitions for resonator

resonator

/ˈrɛzəˌneɪtə/
noun
1.
any body or system that displays resonance, esp a tuned electrical circuit or a conducting cavity in which microwaves are generated by a resonant current
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for resonator
n.

instrument or chamber formed to respond to a single tone, 1869, agent noun in Latin form from resonate (v.).

Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Article for resonator

acoustical device for reinforcing sound, as the sounding board of a piano, the "belly" of a stringed instrument, the air mass of an organ pipe, and the throat, nose, and mouth cavities of a vocal animal. In addition to augmenting acoustic power, resonators may also, by altering relative intensities of overtones, change the quality of a tone. See also soundboard. The Helmholtz resonator is an enclosed volume of air communicating with the outside through a small opening. The enclosed air resonates at a single frequency that depends on the volume of the vessel and the geometry of its opening. The term resonator also denotes a system of electrons within a molecule or ion that absorbs electromagnetic waves of particular (resonance) frequencies (see chromophore).

Learn more about resonator with a free trial on Britannica.com
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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