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astigmatizer

[uh-stig-muh-tahy-zer] /əˈstɪg məˌtaɪ zər/
noun, Optics.
1.
a cylindrical lens used in a rangefinder to draw out the point image of a point source into a line.
Origin of astigmatizer
a-6 + stigmatizer
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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