noun (used with a singular verb)
the branch of optics dealing with the formation of images by mirrors.
Origin of catoptrics
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for catoptrics
Historical Examples of catoptrics
Catoptric, kat-op′trik, adj. relating to catoptrics or vision by reflection.
Catoptrics, which treats of the reflection of light, and Dioptrics, which treats of its refraction.Conversations on Natural Philosophy, in which the Elements of that Science are Familiarly Explained
Jane Haldimand Marcet and Thomas P. Jones
(functioning as singular) the branch of optics concerned with reflection, esp the formation of images by mirrors
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