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Glite Dictionary
spherometer

spherometer

9.9
An instrument that measures how curved a lens or other round surface is
  • noun
  • /sfɪˈrɒmɪtər/
  • Specialized
: esferómetro
  • The technician used a spherometer to determine the curvature of the lens.

Examples

  • Accurate readings from the spherometer ensured the glass surface met the required specifications.

  • A spherometer is essential equipment in an optical laboratory.

  • The spherometer measures the curvature of the lens.

  • He used a spherometer to check the glass curvature.

  • The technician used a spherometer to determine the curvature of the lens.

  • Accurate readings from the spherometer ensured the glass surface met the required specifications.

  • A spherometer is essential equipment in an optical laboratory.

How Accurate

interferometry
  • Specialized
2 8.5
spherometer
  • Specialized
9.9
ruler
24 1.0

Surface Forms

spherometer singular
spherometers plural

Morphology

spherometer = sphere (semi-transparent) = sphere + meter

The parts are recognizable and the meaning is broadly compositional, but the word names a specialized measuring instrument rather than a common everyday object.

Etymology

Spherometer comes from sphere, from an old word meaning 'ball' or 'round', and -meter, which means 'measure', like in thermometer. So a spherometer is a tool that 'measures' how curved a lens or other round surface is.