[n] the act of splitting into two branches
[n] the place where something divides into two branches
[n] a bifurcating branch (one or both of them)
bifurcation, branch, branching, fork, fork, forking, forking, furcation, leg, ramification, ramification
\Bi`fur*ca"tion\, n. [Cf. F. bifurcation.] A forking, or division into two branches.