vergence

vergence

[vur-juhns]
noun Ophthalmology.
the turning motion of the eyeballs toward or away from each other. Compare convergence ( def 4 ), divergence ( def 3 ).

Origin:
1900–05; verge2 + -ence

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Collins
World English Dictionary
vergence (ˈvɜːdʒəns)
 
n
the inward or outward turning movement of the eyes in convergence or divergence
 
[C19: from verge² + -ence]

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

vergence ver·gence (vûr'jəns)
n.
A disjunctive movement of the eyes in which the fixation axes are not parallel.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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