/ Thesaurus / B Synonyms of botanical garden Find synonyms for: Noun1. arboretum, botanical garden, facility, installationusage: a facility where trees and shrubs are cultivated for exhibitionWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: sumptuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language