dioptric

adjective

di·​op·​tric dī-ˈäp-trik How to pronounce dioptric (audio)
: refractive
specifically : assisting vision by refracting and focusing light

Word History

Etymology

Greek dioptrikos of a diopter (instrument), from dioptra

First Known Use

1653, in the meaning defined above

Time Traveler
The first known use of dioptric was in 1653

Dictionary Entries Near dioptric

Cite this Entry

“Dioptric.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dioptric. Accessed 15 Jul. 2024.

Medical Definition

dioptric

adjective
di·​op·​tric (ˈ)dī-ˈäp-trik How to pronounce dioptric (audio)
variants also dioptrical
1
: producing or serving in refraction of a beam of light : refractive
specifically : assisting vision by refracting and focusing light
the dioptric power of a lens
2
: produced by means of refraction
dioptric images
dioptrically adverb
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