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Dictionary

a•stig•ma•tiz•er

Pronunciation: (u-stig'mu-tī"zur), [key]
—n. Optics.
a cylindrical lens used in a rangefinder to draw out the point image of a point source into a line.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

astigmatism

astigmatoscope

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