/ Dictionary / Index A arboreous: Meaning and Definition of Find definitions for: ar•bo•re•ous Pronunciation: (är-bôr'ē-us, -bōr'-), [key] — adj. abounding in trees; wooded. arboreal (def. 2). arborescent. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: arboreous (Thesaurus) arbored arborescent Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language