verg-, -vergent, -vergence

(Latin: bend, curve, turn, tend toward, incline)

vergence (s) (noun), vergences (pl)
1. A turning of one eye with reference to the other; this may be horizontal or it may be vertical.
2. A disjunctive movement of the eyes in which the fixation axes are not parallel.

Inter-related cross references involving word units meaning "bend, curve, turn": diversi-; diverticul-; flect-, flex-; gyro-; meand-; -plex; streph-; stroph-; tors-; tropo-; vers-; volv-.