Bible Dictionaries
Catoptrics
Webster's Dictionary
 (n.) That part of optics which explains the properties and phenomena of reflected light, and particularly that which is reflected from mirrors or polished bodies; - formerly called anacamptics.
 
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 Bibliography Information
Webster, Noah. Entry for 'Catoptrics'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​c/catoptrics.html. 1828.