aplanatic

adjective

ap·​la·​nat·​ic ˌa-plə-ˈna-tik How to pronounce aplanatic (audio)
: free from or corrected for spherical aberration
an aplanatic lens

Word History

Etymology

a- + Greek planasthai to wander — more at planet

First Known Use

1794, in the meaning defined above

Time Traveler
The first known use of aplanatic was in 1794

Dictionary Entries Near aplanatic

Cite this Entry

“Aplanatic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aplanatic. Accessed 3 Mar. 2024.

Medical Definition

aplanatic

adjective
ap·​la·​nat·​ic ˌap-lə-ˈnat-ik, ˌā-plə- How to pronounce aplanatic (audio)
: free from or corrected for spherical aberration
an aplanatic lens
aplanatically adverb
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