Definition of "vergence" []

• 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. (noun)
• The inward or outward turning of one or both eyes that occurs when focusing on an object. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "And those movements, they're called vergence movements, are the movements that I had to learn to make."
• "A person with strabismus, a person with misaligned eyes doesn't make those vergence movements."
• "This definition implies that communication is a process of con vergence (or divergence) as two or more individuals exchange information in order to move toward each other (or apart) in the meanings that they give to certain events."