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vergence

 - 4 dictionary results

ver⋅gence

  [vur-juhns]
Use vergence in a Sentence
–noun Ophthalmology.
the turning motion of the eyeballs toward or away from each other. Compare convergence (def. 4), divergence (def. 3).
Origin:
1900–05; verge 2 + -ence
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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ver·gence   (vûr'jəns)   
n.  

  1. A measure of the convergence or divergence of a pair of light rays, defined as the reciprocal of the distance between a point of reference and the point at which the rays intersect.

  2. The inward or outward turning of one or both eyes that occurs when focusing on an object.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: ver·gence
Pronunciation: 'v&r-j&n(t)s
Function: noun
: a movement of one eye in relation to the other
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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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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