bifurcation
noun formal uk/ˌbaɪ.fəˈkeɪ.ʃən/ us/ˌbaɪ.fɚˈkeɪ.ʃən/
[ U ]分枝；分叉
the fact that something is divided into two parts or the act of dividing something into two parts
[ C ]分枝后的一枝;分叉后的一部分
either of the two parts into which something divides