trifurcate adjective 1verb 1forms 3 adjective1 •Forked, with three tines or points. verb1 •To divide or fork into three channels or branches.2. Branches of the insular part; the MCA may usually bifurcate (78%), trifurcate (Russo, 2011) or quadfurcate (10%) here. — 2022 formstrifurcated · trifurcating · trifurcates