photointerrupter

noun

An optical device that acts as a switch when a beam of light is blocked by a foreign object

Scrabble 23
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Meanings

nounphotointerrupter (plural photointerrupters)

plural photointerrupters

  1. An optical device that acts as a switch when a beam of light is blocked by a foreign object

Origin

From photo- + interrupter.

Full word history & related roots →
Cite this entry
APA

photointerrupter. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/photointerrupter

MLA

“photointerrupter.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/photointerrupter. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “photointerrupter,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/photointerrupter.

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