spherometer

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noun

A device used to measure the curvature of a surface, such as a lens.

“More precisely, a spherometer directly measures a sagitta (distance between a point and a chord), allowing the radius of curvature to be calculated.”

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Meanings

nounspherometer (plural spherometers)

plural spherometers

  1. engineeringA device used to measure the curvature of a surface, such as a lens.

    More precisely, a spherometer directly measures a sagitta (distance between a point and a chord), allowing the radius of curvature to be calculated.

Origin

From sphero- + -meter.

Full word history & related roots →

Translations

Catalan esferòmetre
  • esferòmetremeasuring device
Italian sferometro
  • sferometromeasuring device
Malay sferometer
  • sferometermeasuring device
Portuguese esferómetro, esferômetro
  • esferómetromeasuring device
  • esferômetromeasuring device
Spanish esferómetro
  • esferómetromeasuring device
Cite this entry
APA

spherometer. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/spherometer

MLA

“spherometer.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/spherometer. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “spherometer,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/spherometer.

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