aplanatic

adjective
ap·la·nat·ic | \ˌa-plə-ˈna-tik \

Definition of aplanatic 

: free from or corrected for spherical aberration an aplanatic lens

First Known Use of aplanatic

1794, in the meaning defined above

History and Etymology for aplanatic

a- + Greek planasthai to wander — more at planet

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The first known use of aplanatic was in 1794

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More Definitions for aplanatic

aplanatic

adjective
ap·la·nat·ic | \ˌap-lə-ˈnat-ik, ˌā-plə- \

Medical Definition of aplanatic 

: free from or corrected for spherical aberration an aplanatic lens

Other Words from aplanatic

aplanatically \-i-k(ə-)lē \ adverb

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lying above or upon

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