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varactor

noun

varactor is a noun meaning “A solid-state diode whose capacitance varies with the applied voltage” (English Wiktionary, September 2026). It is spelled V-A-R-A-C-T-O-R, and it appears about once in every 42 million words in written English (wordfreq, 2021 data). The plural of varactor is varactors.

What does varactor mean?

noun

  1. 1

    A solid-state diode whose capacitance varies with the applied voltage.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Forms of varactor

  • varactors plural
  • varactor diode

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

How common is varactor?

Varactor appears about once in every 42 million words in written English, the 199,120th most frequent word form in the list.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

Varactor in Spanish, French, German and Portuguese

In the sense solid-state diode:

LanguageWords
Frenchdiode à capacité variable, diode varicap
Spanishdiodo de capacidad variable, diodo varicap

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.

Where does varactor come from?

Blend of variable + reactor.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).