free from spherical aberration and coma.
Origin of aplanatic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for aplanatic
Historical Examples of aplanatic
(of a lens or mirror) free from spherical aberration
Word Origin for aplanatic
C18: from Greek aplanētos prevented from wandering, from a- 1 + planētos, from planaein to wander
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Of or relating to an optical lens that is free from chromatic or spherical aberration.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.