Thuja occidentalis thu·jaoc·ci·dentalis uncommon noun 1. small evergreen of eastern North America having tiny scalelike leaves on flattened branchlets SynonymsAmerican arborvitaenorthern white cedarwhite cedarThuja occidentalis Related words Broader terms arborvitae Parts Thuja WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
