tonometer

T1O1N1O1M3E1T1E1R1

noun

An instrument used to measure tension or pressure, especially inside the eye.

Similar
tonograph
OriginAncient Greek μέτρον (métron) ← Proto-Indo-European *meh₁- ← English tono- →
Scrabble 11
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Meanings

nountonometer (plural tonometers)

plural tonometers

  1. An instrument used to measure tension or pressure, especially inside the eye.

    Synonyms: tonograph

Synonyms & antonyms

nounAn instrument used to measure tension or pressure, especially inside the eye.

Similar
tonograph

Origin

  1. Proto-Indo-European*ten-
  2. Proto-Indo-European*tónos
  3. Proto-Hellenic*tónos
  4. Ancient Greekτόνος (tónos)
  5. Englishtono-
  6. Proto-Indo-European*med-
  7. Proto-Indo-European*meh₁-
  8. Ancient Greekμέτρον (métron)
  9. Englishtonometer

From tono- + -meter.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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