vactrol

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noun

A resistive opto-isolator.

Scrabble 12
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Meanings

nounvactrol (plural vactrols)

plural vactrols

  1. businessA resistive opto-isolator.

Origin

From a trademark introduced by Vactec, Inc. in the 1960s.

Full word history & related roots →
Cite this entry
APA

vactrol. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/vactrol

MLA

“vactrol.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/vactrol. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “vactrol,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/vactrol.

Source: vactrol on Wiktionary, CC BY-SA 4.0.