figuring
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figuring
The process of grinding and polishing the surface of a lens or mirror base to the exact shape desired.Collins Dictionary of Astronomy © Market House Books Ltd, 2006
figuring
[′fig·yər·iŋ] (optics)
Grinding or polishing of surfaces of optical components to remove aberrations.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.