Dictionary.com
Thesaurus.com

oscillator

American  
[os-uh-ley-ter] / ˈɒs əˌleɪ tər /

noun

  1. Electronics. a circuit that produces an alternating output current of a certain frequency determined by the characteristics of the circuit components.

  2. a device or machine producing oscillations.

  3. a person or thing that oscillates.


oscillator British  
/ ˈɒsɪˌleɪtə /

noun

  1. a circuit or instrument for producing an alternating current or voltage of a required frequency

  2. any instrument for producing oscillations

  3. a person or thing that oscillates

"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

Etymology

Origin of oscillator

1825–35; < New Latin, equivalent to Latin oscillā ( re ) to swing ( see oscillate) + -tor -tor

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Even so, the “stocks only” breadth oscillator has closed above +200 for two consecutive days, and that means it has rolled over to a buy signal.

From MarketWatch Aug. 6, 2026

One well-known example is the "cat state," where an oscillator exists as a superposition of two wave packets moving in opposite directions.

From Science Daily Jun. 15, 2026

To accomplish the feat, the researchers adopted a laser architecture known as the Mamyshev oscillator, a design that had received relatively little attention in integrated photonics.

From Science Daily Jun. 4, 2026

The NYSE-based breadth oscillator is now on a sell signal, and the “stocks only” breadth oscillator could follow suit.

From MarketWatch Apr. 30, 2026

Malcolm Henderson, working on the cyclotron in the next room, was used to hearing the X-ray workers shout to make themselves heard over the thrum of the tube’s oscillator.

From "Big Science" by Michael Hiltzik

Vocabulary.com logo
by dictionary.com

Join 12,000,000 vocabulary learners

Start learning new words today on VocabTrainer.
You'll remember them forever.

Start training