EXAMPLES | WORD ORIGIN noun ( used with a singular verb) the branch of optics dealing with the formation of images by mirrors. Origin of catoptrics 1560–70;
) mirror (
suffix of instruments) +
-ics Related forms ca·top·tric, ca·top·tri·cal, adjective ca·top·tri·cal·ly, adverb
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for catoptric Historical Examples of catoptric
Two methods of lighting have been employed—the
Catoptric and the Dioptric systems. Catoptric, kat-op′trik, adj. relating to catoptrics or vision by reflection.
The floating lights of England are illuminated by means of lamps with metallic reflectors, on what is styled the
Another classification divides the instruments themselves into three classes: (a)
catoptric, (b) dioptric and (c) catadioptric.
This optic embodied the first combination of dioptric and
catoptric elements in one design (fig. 34). British Dictionary definitions for catoptric noun (functioning as singular) the branch of optics concerned with reflection, esp the formation of images by mirrors Derived Forms catoptric or catoptrical, adjective Word Origin for catoptrics
C18: from Greek
katoptrikos, from katoptron mirror
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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Word Origin and History for catoptric adj.
"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
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
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