# resonator

/ɹˈɛzənˌeɪtɐ/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/resonator
Updated: 2026-05-25

## Definition

a device that makes a sound louder or a specific frequency stronger. It can also be a part of a machine that helps it vibrate.

For teachers: a device or structure that amplifies or sustains a specific frequency of sound or vibration. Often used in acoustics, physics, or engineering to describe components that store and transfer energy at a particular rate.

## Examples

- The guitar has a hollow body that acts as a resonator.
- Engineers added a mechanical resonator to the bridge to dampen the vibrations caused by passing trains.
- In radio frequency circuits, a quartz resonator provides a highly stable frequency reference, ensuring that the transmitted signal remains consistent even under varying environmental conditions.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.