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Adjective: arboreal  aa(r)'boreeul
  1. Of or relating to or formed by trees
    - arborical, arborary, arborous
     
  2. Inhabiting or frequenting trees
    "arboreal apes"
    - arboreous, tree-living
     
  3. Resembling a tree in form and branching structure
    - arboreous, arborescent, arboresque, arboriform, dendriform, dendroid, dendroidal, treelike, tree-shaped

See also: arbor [N. Amer, Austral], branchy, tree

Antonym: nonarboreal

Encyclopedia: Arboreal