Origin of vergence
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the inward or outward turning movement of the eyes in convergence or divergence
C19: from verge ² + -ence
Word Origin and History for vergence
Online Etymology Dictionary, © 2010 Douglas Harper
- A disjunctive movement of the eyes in which the fixation axes are not parallel.