Definition of varactor in English:


Line breaks: var|actor
Pronunciation: /vəˈraktə


  • A semiconductor diode with a capacitance dependent on the applied voltage.
    More example sentences
    • The most significant use of varactors to date has been as the basic component in parametric amplifiers.
    • They key to understanding how a varactor or varicap diode works is to look at what a capacitor is and what can change the capacitance.
    • This nonlinearity allows the varactor to be used also as a harmonic generator.


1950s: from elements of variable reactor.

More definitions of varactor

Definition of varactor in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
elaborate ornamentation of a vocal melody