catoptric
trɪks noun ( used with a singular verb )
the branch of optics dealing with the formation of images by mirrors.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source
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Link To catoptric
Collins
World English Dictionary
catoptrics (kəˈtɒptrɪks) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n | |
| (functioning as singular) the branch of optics concerned with reflection, esp the formation of images by mirrors | |
| [C18: from Greek katoptrikos, from katoptron mirror] | |
| ca'toptric | |
| —adj | |
| ca'toptrical | |
| —adj | |
00:10
Catoptric
is always a great word to know.
So is ort. Does it mean:
| a scrap or morsel of food left at a meal. |
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
| catoptrics (kəˈtɒptrɪks) | |
| —n | |
| (functioning as singular) the branch of optics concerned with reflection, esp the formation of images by mirrors | |
| [C18: from Greek katoptrikos, from katoptron mirror] | |
| ca'toptric | |
| —adj | |
| ca'toptrical | |
| —adj | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Science Dictionary
catoptric  (kə-tŏp'trĭk) Pronunciation Key
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 © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
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