noun (used with a singular verb)

the branch of optics dealing with the formation of images by mirrors.

Origin of catoptrics

1560–70; < Greekkatoptrikós, equivalent to kátoptr(on) mirror (kat- cat- + op- see + -tron suffix of instruments) +-ikos -ic; see -ics
Related formsca·top·tric, ca·top·tri·cal, adjectiveca·top·tri·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for catoptric

Historical Examples of catoptric

British Dictionary definitions for catoptric



(functioning as singular) the branch of optics concerned with reflection, esp the formation of images by mirrors
Derived Formscatoptric or catoptrical, adjective

Word Origin for catoptrics

C18: from Greek katoptrikos, from katoptron mirror
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

Word Origin and History for catoptric

"pertaining to mirrors or a mirror," 1774, from Latinized form of Greek katoptrikos, from katoptron "mirror," from kata- "against" (see cata-) + stem of optos "seen, visible" (see optic) + instrumental suffix -tron. Related: Catoptrics; catoptrical.

Online Etymology Dictionary, © 2010 Douglas Harper

catoptric in Science



Relating to the reflection of light, especially by a mirror. Catoptric lenses are used in Fresnel lenses and many telescopes. Compare catadioptric dioptric.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.