astigmatoscope

as·tig·mat·o·scope

[as-tig-mat-uh-skohp]
noun Ophthalmology.
an instrument for determining the presence and severity of astigmatism.

Origin:
astigmat(ism) + -o- + -scope

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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American Heritage
Medical Dictionary

astigmatoscope as·tig·mat·o·scope (ās'tĭg-māt'ə-skōp') or a·stig·mo·scope (ə-stĭg'mə-skōp')
n.
An instrument for detecting and measuring the degree of astigmatism.


a·stig'ma·tos'co·py (-tŏs'kə-pē) or as'tig·mos'co·py (-mŏs'kə-pē) n.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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00:10
Astigmatoscope is always a great word to know.
So is gobo. Does it mean:
a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.
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