1. (adj)arboreal, arboreous, tree-living inhabiting or frequenting trees "arboreal apes"
2. (adj)arboraceous, arboreous, woodsy, woody abounding in trees "an arboreous landscape"; "violets in woodsy shady spots"; "a woody area near the highway"
3. (adj)arboreal, arboreous, arborescent, arboresque, arboriform, dendriform, dendroid, dendroidal, treelike, tree-shaped resembling a tree in form and branching structure "arborescent coral found off the coast of Bermuda"; "dendriform sponges"
Definition of 'arboreous'
Webster Dictionary
1. (adj)arboreous having the form, constitution, or habits, of a proper tree, in distinction from a shrub
2. (adj)arboreous pertaining to, or growing on, trees; as, arboreous moss