Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

aplanatic

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

Definition of aplanatic

  1. :  free from or corrected for spherical aberration <an aplanatic lens>



Origin and Etymology of aplanatic

a- + Greek planasthai to wander — more at planet


First Known Use: 1794


Medical Dictionary

aplanatic

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

Medical Definition of aplanatic

  1. :  free from or corrected for spherical aberration <an aplanatic lens>

aplanatically

\-i-k(ə-)lē\play adverb



Learn More about aplanatic

  1. Medical Dictionary: Definition of aplanatic


Seen and Heard

What made you want to look up aplanatic? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a simplified speech bridging languages

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

confounded-person

Which is a synonym of indolent?

frenetic lazy philistine melancholy
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ