say it: ahr-BAW-ree-uhl
arboreal is an adjective meaning "of or relating to or formed by trees". It carries 3 recorded senses.
resembling a tree in form and branching structure
“arborescent coral found off the coast of Bermuda”
“dendriform sponges”
Definitions, synonyms and semantic relations for arboreal come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.