photoresistor

noun

Etymology: Etymology tree Proto-Indo-European *bʰeh₂- Proto-Indo-European *bʰéh₂os Proto-Hellenic *pʰáwos Ancient Greek φᾰ́ος (phắos) Ancient Greek φῶς (phôs) Ancient Greek φωτο- (phōto-)der. English photo- English resist Proto-Indo-European *-tōr Proto-Italic *-tōr Latin -tor Latin -ātor Old French -eorbor. Middle English -our ▲ Latin -torlbor. English -or English resistor English photoresistor From photo- + resistor.

1. An electronic component whose resistance is inversely proportional to the intensity of incident light.

   “Use the preceding circuit, but replace the slide switch (S1) with the photoresistor (RP). Cover and uncover the photoresistor to change the sound.”