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refractor

Syllabification: re·frac·tor
Pronunciation: /riˈfraktər
 
/

Definition of refractor in English:

noun

1A lens or other object that causes refraction.
Example sentences
  • He contributed to the theory of refraction, and as a result of his theory of the wave form of light he was able to calculate the refraction within the lenses and make refractors with lesser chromatic and spherical aberration.
  • The results demonstrated that trained nurses and lay screeners achieved similar accuracy rates administering the two automated refractors.
  • An arc of white light shone through the carefully planned refractors near its crest, making the Citadel look like an archer's bow drawn to the sky.
1.1A refracting telescope.
Example sentences
  • Italian mathematician and astronomer Galileo Galilei used the first optical telescope, a refractor, in 1610.
  • Actually it was the biggest refractor (lens telescope); Sir William Herschel, who had died in 1822, had previously constructed larger reflecting telescopes (using curved mirrors) out at Slough.
  • This he equipped with a small refractor: a lens telescope with an aperture of four inches.

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