i Register
In some senses, dioptric is marked as obsolete. Watch for register when choosing this word.
dioptric
/daɪˈɒptɹɪk/
adj 3noun 2
Definitions
adj
1
Acting as a medium for sight; making use of refraction (of lenses, etc.).
2
Pertaining to a diopter.
[W]ould the new Narcissus—without any dioptric or sciatherical computing—grasp the alternating skirmish of light and shadow.
3
Capable of being seen through.
noun
1
The branch of optics concerned with refraction.
2
A dioptric telescope.
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