photoplethysmograph

noun

A plethysmograph that uses illumination of the skin in order to measures changes in light absorption

Similar
PPG
OriginEnglish plethysmograph ← Ancient Greek φωτο- (phōto-) ← Proto-Hellenic *pʰáwos →
Scrabble 40
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Meanings

nounphotoplethysmograph (plural photoplethysmographs)

plural photoplethysmographs

  1. A plethysmograph that uses illumination of the skin in order to measures changes in light absorption

    Synonyms: PPG

Synonyms & antonyms

nounA plethysmograph that uses illumination of the skin in order to measures changes in light absorption

Similar
PPG

Origin

  1. Proto-Indo-European*bʰeh₂-
  2. Proto-Indo-European*bʰéh₂os
  3. Proto-Hellenic*pʰáwos
  4. Ancient Greekφᾰ́ος (phắos)
  5. Ancient Greekφῶς (phôs)
  6. Ancient Greekφωτο- (phōto-)
  7. Englishphoto-
  8. Englishplethysmograph
  9. Englishphotoplethysmograph

From photo- + plethysmograph.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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