/ Thesaurus / O Synonyms of oriental arborvitae Find synonyms for: Noun1. Oriental arborvitae, Thuja orientalis, Platycladus orientalis, arborvitaeusage: Asiatic shrub or small tree widely planted in United States and Europe; in some classifications assigned to its own genusWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language