vergence
/ˈvɜːdʒəns/noun
mass noun
1
- Physiology the simultaneous movement of the pupils of the eyes towards or away from one another during focusing【生理】（眼的）转向。
2
- Geology the direction in which a fold is inclined or overturned【地质】构造转向：
a zone of opposing fold vergence.
一个相对的褶皱构造转向地带。
词源
1980s: common element of CONVERGENCE and DIVERGENCE.