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aspherical

 - 2 dictionary results

a⋅spher⋅i⋅cal

[ey-sfer-i-kuhl]
–adjective Optics.
(of a reflecting surface or lens) deviating slightly from a perfectly spherical shape and relatively free from aberrations.
Also, a⋅spher⋅ic.


Origin:
1920–25; a- 6 + spherical
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To aspherical
a·spher·ic   (ā-sfîr'ĭk, ā-sfěr'-)   
adj.  Varying slightly from sphericity and having only slight aberration, as a lens.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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