Dictionary
Find
in
Dictionary
Thesaurus
Translations

Click to move up the list of words
aphonia
aphorise
aphorism
aphorize
aphotic
aphrodisiac
Aphrodite
aphtha
Apia
apian
apiarist
apiary
apical
apical dominance
apical meristem
apices
apicomplexan
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

aplanatic

ap·la·nat·ic [ àpplə náttik ]


adjective 
Definition:
 
without spherical aberration: describes a lens that does not have, or is corrected for, spherical aberration and so produces a clear undistorted image

[Late 18th century. < Greek aplanētos "without error" < planasthai "wander"]
Advertisement

© 2009 Microsoft