- of, relating to, or resembling a tree
- living in or among trees
WordReference Random House Learner's Dictionary of American English © 2020
- Botanyof or relating to trees;
- living in trees:arboreal animals.
- Botanyof or pertaining to trees;
- Also, arboreous. living in or among trees.
- Zoologyadapted for living and moving about in trees, as the limbs and skeleton of opossums, squirrels, monkeys, and apes.
- Latin arbore(us) of trees (arbor tree + -eus -eous) + -al1