trifurcate
Concise Oxford English Dictionary © 2008 Oxford University Press:
trifurcate
▶verb /ˈtrʌɪfəkeɪt/ divide into three branches or forks. ▶adjective /-ˈfəːkət/ divided in this way.
– derivatives
trifurcation noun.
trifurcation noun.
'trifurcate' also found in these Oxford entries:

