[ dahy-op-trik ]
/ daɪˈɒp trɪk /


Optics. pertaining to dioptrics: dioptric images.
Optics, Ophthalmology. noting or pertaining to refraction or refracted light.
Also di·op·tri·cal.

Origin of dioptric

From the Greek word dioptrikós, dating back to 1625–35. See diopter, -ic
Related formsdi·op·tri·cal·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for dioptric

British Dictionary definitions for dioptric



/ (daɪˈɒptrɪk) /


of or concerned with dioptrics
of or denoting refraction or refracted light
Derived Formsdioptrically, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for dioptric


[ dī-ŏptrĭk ]

Relating to the refraction of light, especially by a lens. Dioptric lenses are used in Fresnel lenses and camera viewfinders. Compare catadioptric catoptric.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.