Definition of dioptric in English:


Syllabification: di·op·tric
Pronunciation: /dīˈäptrik


  • Of or relating to the refraction of light, especially in the organs of sight or in devices that aid or improve the vision.
    More example sentences
    • The dioptric power of this liquid lens depends on the refractive indices of the materials and the radius of curvature of the interface.
    • The dioptric system helps focus the image on the retina.
    • If the lens had an index of 1.53, the dioptric value of that radius of curvature would be 4.64 diopters.


mid 17th century: from Greek dioptrikos, from dioptra, a kind of theodolite (see diopter).

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a small amount; a little