vergencePronunciation: /ˈvəːdʒ(ə)ns/Definition of vergence noun [mass noun] 1 Physiology the simultaneous movement of the pupils of the eyes towards or away from one another during focusing. 2 Geology the direction in which a fold is inclined or overturned:a zone of opposing fold vergenceOrigin: 1980s: common element of convergence and divergencevergence in other Oxford dictionaries Definition of vergence in the US English dictionary