trifurcated
V-shaped
Y-shaped
arboreal
arborescent
arboriform
biforked
bifurcate
bifurcated
branched
branching
branchlike
crotched
deltoid
dendriform
dendritic
forked
forking
forklike
furcate
pronged
ramous
three-cornered
three-dimensional
three-footed
three-pronged
three-sided
tree-shaped
treelike
triangular
triangulate
triarch
trichotomous
tricorn
tricornered
tricuspid
trident
tridental
tridentlike
trifid
triflorate
triflorous
trigonal
trigonoid
trigrammatic
trihedral
trilateral
trimerous
triparted
branch
fork
ramify
separate