Bible Dictionaries
Vergency

Webster's Dictionary

(1):

(n.) The reciprocal of the focal distance of a lens, used as measure of the divergence or convergence of a pencil of rays.

(2):

(n.) The act of verging or approaching; tendency; approach.

Bibliography Information
Webster, Noah. Entry for 'Vergency'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​v/vergency.html. 1828.