(adj) of or relating to a defect in the eye or in a lens caused by a deviation from spherical curvature which prevents light rays from meeting at a common focus and so results in distorted images, Ant.anastigmatic
a. [ Pref. an-not + astigmatic. ] (Optics) Not astigmatic; free of astigmatism; -- pertaining to a lens or lens system, and used especially of a lens system which consists of a converging lens and a diverging lens of equal and opposite astigmatism but different focal lengths, and sensibly free from astigmatism. [ Webster 1913 Suppl. + WordNet 1.5 ]
{ } a. [ See Stigma. ] 1. Marked with a stigma, or with something reproachful to character. [ 1913 Webster ]
2. Impressing with infamy or reproach. [ R. ] [ 1913 Webster ]
3. (Bot., Anat., etc) Of or pertaining to a stigma or stigmata. [ 1913 Webster ]
Stigmatic geometry, or Stigmatics, that science in which the correspondence of index and stigma (see Stigma, 7) is made use of to establish geometrical proportions. [ 1913 Webster ]
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