(ˈ)ā+|- adjective
or aspherical (ˈ)ā+|-
Etymology: a- (II) + spheric, spherical
1. : departing slightly from the spherical form — used of an optical surface
2. : free from spherical aberration
(ˈ)ā+|- adjective
or aspherical (ˈ)ā+|-
Etymology: a- (II) + spheric, spherical
1. : departing slightly from the spherical form — used of an optical surface
2. : free from spherical aberration
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012