# oscillator

/ˈɑsəˌɫeɪtɝ/ (US) · /ˈɒsɪlˌeɪtɐ/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/oscillator
Updated: 2026-05-18

## Definition

a device or system that produces a regular, repeating signal or movement. You often find these in radios, clocks, or computers to keep things running in time.

For teachers: a device or system that produces a periodic, oscillating signal or motion. Often used in electronics to generate a specific frequency for communication or timing purposes.

## Examples

- The radio uses an oscillator to tune into different stations.
- Engineers designed a high-precision oscillator to ensure the satellite's onboard computer remained synchronized with Earth.
- In biological systems, the circadian oscillator regulates the internal clock of organisms, ensuring that physiological processes align with the daily cycle of light and darkness.

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