astigmatism Hear it!

astigmatism definition

astig·ma·tism (ə stig′mə tiz′əm)

noun

  1. an irregularity in the curvature of a lens, including the lens of the eye, so that light rays from an object do not meet in a single focal point, resulting in an indistinct or distorted image
  2. distorted view or judgment, as because of bias

Etymology: < Gr a-, without + stigma (gen. stigmatos) a mark, puncture (see stick) + -ism

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.