*1 : the [[act]] of converging and especially moving toward [[union]] or [[uniformity]]; especially : [[coordinated]] movement of the two eyes so that the image of a single point is formed on corresponding retinal areas | *1 : the [[act]] of converging and especially moving toward [[union]] or [[uniformity]]; especially : [[coordinated]] movement of the two eyes so that the image of a single point is formed on corresponding retinal areas |