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vergence

   Also found in: Medical, Encyclopedia, Wikipedia 0.03 sec.
ver·gence  (vûrjns)
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.

vergence [ˈvɜːdʒəns]
n
(Life Sciences & Allied Applications / Physiology) the inward or outward turning movement of the eyes in convergence or divergence
[from verge2 + -ence]


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